Swedish Patent Database. Here you can search for Swedish patents, public patent applications, European patents (EP patents) validated in Sweden and European patents with unitary effect (Unitary patents). See About the database for more information. In a Quick search you can search by word, number or a combination.Number ? Additional fields are available via our API for commercial use. Please inquire if you would like access to these, and other, fields: Assignee Count, Claim Count, Expiration Date (with term extensions), Family Member Count, Image Count, Inventor Count, Priorities Count, Reference Count, Word Count, Assignment Count. Complete Patent ...To search for a specific patent, simply type the number in the search box and click the “pn ... the figure below shows a comparison of a portion of U.S. Pat. No. 9,123,123 that contains the ... To use this new feature, you’ll need to be logged in to your USPTO.gov account and search in Expert mode. To learn more, see the Viewing your search results section under Get started on the Help page. We’re aware that in a small number of cases, the status shown in the new Trademark Search differs from the Trademark Status and Document ... About the U.S. and its government A-Z index of U.S. government departments and agencies U.S. Patent and Trademark Office State and local governments U.S. facts and …The U.S. Patent & Trademark Office (USPTO) Patent Database includes full text of patents from 1790 - present and also provides TIFF images of most of them.. By Patent Number. Go to USPTO Database.; Select Patent Number Search or Publication Number Search. By Subject. Go to USPTO Database and select Quick Search. Enter …To see if your idea has been patented abroad, you'll want to refer to searchable databases made available from other International Intellectual Property offices. Free online access to patent collections is provided by many countries. Some available databases include: 1. European Patent Office (EPO) provides … See moreThis report shows the number of U.S. patent documents (i.e., utility patents, design patents, plant patents, reissue patents, defensive publications, and statutory invention registrations) granted since 1977, broken down by the state or country of origin (patent origin is determined by the residence of the first-named inventor).Did you know you can perform a patent search on Google? Check out this Google patent search tutorial! (FREE resources included below...) ⏬Registered USPTO pa...Online patent tools. Locate online patent services and information. Patent Center. Single interface replacement for EFS-Web, Private PAIR and Public PAIR. Electronic Business Center; Check application status. Check patent application status with Patent Center. Fees and payment. Pay maintenance fees and learn more about filing …Enter a patent number or published patent application number in the Quick Lookup query box and select “Search.” Utility Patent numbers must be entered as a minimum of …General steps. Searching U.S. patents. Obtaining full-text. How to search for patents. It is tempting to think all searching can be done electronically – and for the …Feb 7, 2019 · Toll-Free. 800-786-9199. Local. 571-272-1000. TTY/TDD. 800-877-8339. Email. [email protected]. For general information, mailing addresses, Internet addresses, USPTO.gov accounts, how to use the online fee payment management system and contact information for other USPTO services. If you already have one or more specific patent numbers, here are a couple of basic options for obtaining the full text and/or images for the patent. Google Patents: Go to the Google Patents website and search for the patent number, using the prefix "US" and no punctuation. For example, search for patent #123,456 as US123456.The backup restore manager service sends a backup restore request to retrieve the backups from the other backup data storage and loads the backups to restore the database in the first region. Type: Application. Filed: October 19, 2023. Publication date: April 11, 2024. Applicant: Amazon Technologies, Inc.Kind codes include A (published application), B (US patent) and C (CA patent). Search Tips Look for a patent number on the product or packaging. Many companies print patent document numbers on their products as public notification of their patent rights. Use the patent number to search and retrieve a copy of the patent from …Search for a patent application. Search by application number, patent number, PCT number, publication number or international design registration number.The Publication Number search form provides the option for a Specialized Search when searching for patent publication numbers. Patent publication number searches with Document Copies as the output type are limited to 500 records; submitting a request for more than 500 documents only processes the first 500. Patent publication number …Search Criteria. Enter your search criteria in the text box. Examples: elevator, robot, twin-engine, "smith john". Search Criteria (required) Do you wish to use the Bilingual Search? Yes No. Canadian Patents Database. Introduction. United States Patent and Trademark Office - Patent Center Enter the patent/published patent application number(s) you wish to search with a space between each one, as in this example: (“20180093696” “6707006” ”6392195”) Select the “PN” button: The search will execute with the .PN. searchable index applied to each item in the entire search string. Figure 8: PN button.Search specific patents by importing a CSV or list of patent publication or application numbers.Patents issued between 1790 and 1975 can only be found through the USPTO search and require the patent number, U.S. classification, and issue date. The Google Patent Advanced Search permits users to search by inventor, patent number, assignee, classification number, topic, and date. This applies to patents issued before …Search within the title, abstract, claims, or full patent document: You can restrict your search to a specific field using field names.. Use TI= to search in the title, AB= for the abstract, CL= for the claims, or TAC= for all three. For example, TI=(safety belt). Search by Cooperative Patent Classifications (CPCs): These are commonly used to represent …The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.US United States Prior art keywords glyphosate acid limited agents spp Prior art date 2002-08-30 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires 2027-09-03 Application number US10/652,684 ...The Publication Number search form provides the option for a Specialized Search when searching for patent publication numbers. Patent publication number searches with Document Copies as the output type are limited to 500 records; submitting a request for more than 500 documents only processes the first 500. Patent publication number …Search published patents, the internet and trade publications to find out if your invention is new and to check for similar inventions. Check to see if your IP is being infringed. Check patent documents for possible solutions to technical and production problems. Obtain product information on your competitors for research purposes and to ...2 days ago · The United States Patent and Trademark Office (USPTO) is the federal agency for granting U.S. patents and registering trademarks. In doing this, the USPTO fulfills the mandate of Article I, Section 8, Clause 8, of the Constitution that the legislative branch "promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their ... Classification Text Search. Enter one or more keywords in the field to search the Classification Scheme (Schedule) and Definitions. Tip: Use quotes to search for exact phrases (e.g. "fuel cells") Select Classification System: All CPC All USPC.PPUBS is a free online search tool for all U.S. published patent applications and patent grants. Currently, approximately 4,500 users are conducting patent searches with PPUBS each day in the U.S. and internationally, and close to 350,000 people have used PPUBS since it launched. Based on the success and positive feedback we’ve …The IPOPHL can offer an edge to local industries through providing expertise on the analyses of patent data and patent activity in a given field of technology. Trends and current gaps in an industry’s technological landscape can be a springboard for further innovation. IPOPHL offers Commercial Patent Search and Patent Analytics services to ...USPTO’s new Diversity Information Platform: Advancing innovation through data-driven action. The unique online platform is free and available to anyone with an internet …What is Google Patents. Google Patents is Google's own patent search tool. It draws on patents from more than 100 of the biggest patent offices from around the world, enabling you to search across more than 120 million documents. As such it rivals the EPO's Espacenet for coverage. Full-text patent documents are indexed from 20 of the …Supplementary Protection Certificate Search. Search for an SPC using either the SPC number or patent number. by patent number. Find SPC using patent number. ... Tell us about a problem with this service 8:30am to 5:00pm (UK time) Monday to Friday. Phone 0300 300 2000 or +44 (0)1633 814000May 18, 2021 · Starting October 1, 1992, design patent applications are assigned separate application serial numbers which are associated with newly established application series codes, beginning with "29". Starting June 8, 1995, the PTO began to accept provisional patent applications in accordance with implemented legislation arising from the GATT Uruguay ... US11107588B2 US17/106,279 US202017106279A US11107588B2 US 11107588 B2 US11107588 B2 US 11107588B2 US 202017106279 A US202017106279 A US 202017106279A US 11107588 B2 US11107588 B2 US 11107588B2 ... Application number US17/106,279 Other versions US20210082583A1 (en Inventor Gal EHRLICH ... 2021-08 … United States Patent and Trademark Office - Patent Center Seven-step U.S. patent search strategy . U.S. patent search assistance at a Patent and Trademark Resource Center ( PTRC) ... From the results page c lick on either the patent number or t he patent title to see the full -text of the patent (patents issued prior to 1970 will not have a full- text version, only a limited text entry). Click on the redLearn how to use Patent Public Search (PPUBS) Advanced in this recorded demonstration with emphasis on design patent searching. PPUBS is a publicly available USPTO search tool that permits searching U.S. patents and U.S. patent application publications. PPUBS has two interfaces: Basic and Advanced. Other ways to view this …Searching for U.S. patents online. Search for United States patents on the website of the USPTO (United States Patent and Trademark Office) . Pre-1976 patent searches are limited to patent numbers and classification codes.. Database searches: 1790 to 1975 - Images of patent applications with specifications and diagrams.Searchable only by …Jul 31, 2018 · In order to search by Customer Number, you must have access to the Patent Electronic System, Patent Center, using a Registered USPTO.gov account. Go to Getting Started - New Users for instructions to obtain a: Applications by Customer Number - You may search for all applications related to a specific customer number. Patent Center ... PatentCenter UIDec 19, 2023 · Watch on. Published on: December 19, 2023 17:22. Learn how to find all U.S. patent documents published on, before, or after a particular date, or within a range of two dates using Patent Public Search. Other ways to view this video. PPUBS is a free online search tool for all U.S. published patent applications and patent grants. Currently, approximately 4,500 users are conducting patent searches with PPUBS each day in the U.S. and internationally, and close to 350,000 people have used PPUBS since it launched. Based on the success and positive feedback we’ve …Application number US329608A Inventor Pons Charles Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ... References Cited in the file of this patent UNITED STATES PATENTS 2,546,465 Martini Mar. 27, 1951 2,613,882 …This application claims the benefit of U.S. Provisional Patent Application No. 60/465,927 filed Apr. 25, 2003, which is incorporated herein by reference in its entirety. STATEMENT OF GOVERNMENT SUPPORT. This invention was made by the Centers for Disease Control and Prevention, an agency of the United States Government.Find out how to register and maintain a trademark in the U.S., apply for an international trademark, ... Spoofing phone numbers; What to do if scammed; Understanding filing firms; ... About the USPTO Search for patents Search for trademarks. US Department of Commerce. Accessibility.: US-PGPUB (U.S. pre-grant applications to 3/2001), USPAT (full-text U.S. patents to 1970, classification and patent number searching to 1790) and USOCR (OCR scanned pre-1970 U.S. patents). By default, all three databases are selected. Use the “ Databases ” button (red rectangle in Figure 1) to show or hide the menu options. Search queriesSearch specific patents by importing a CSV or list of patent publication or application numbers. To use this new feature, you’ll need to be logged in to your USPTO.gov account and search in Expert mode. To learn more, see the Viewing your search results section under Get started on the Help page. We’re aware that in a small number of cases, the status shown in the new Trademark Search differs from the Trademark Status and Document ... A provisional patent application allows you to file without a formal patent claim, oath or declaration, or any information disclosure (prior art) statement. Since June 8, 1995, the United States Patent and Trademark Office (USPTO) has offered inventors the option of filing a provisional application for patent which was designed to provide a ...Find out how to register and maintain a trademark in the U.S., apply for an international trademark, ... Spoofing phone numbers; What to do if scammed; Understanding filing firms; ... About the USPTO Search for patents Search for trademarks. US Department of Commerce. Accessibility.Kind codes include A (published application), B (US patent) and C (CA patent). Search Tips Look for a patent number on the product or packaging. Many companies print patent document numbers on their products as public notification of their patent rights. Use the patent number to search and retrieve a copy of the patent from …A patent family includes filings of the same invention by the same applicant in multiple countries or jurisdictions." "2019 was a strong year for US patents. 333,530 patent grants were issued by the USPTO — an all-time high. After a down year in 2018, US patent grants rebounded by a solid 15%. US published applications grew by a smaller 5%."1. Enter a patent number or published patent application number in the Quick Lookup query box and select “Search.”. Utility Patent numbers must be entered as a minimum of seven digits, with leading zeroes if needed. For other types of patents, if the patent number is alpha-numeric (e.g. letter prefix D for a design patent or PP for a plant ...Patents with an issue date on or after April 18, 2023 are issued as electronic patent grants (eGrants). Patent Center is available to all users to check application status, electronically file and manage patent applications in a single unified interface. Patent Center features a training mode, which is a simulator to practice filing.The IPOPHL can offer an edge to local industries through providing expertise on the analyses of patent data and patent activity in a given field of technology. Trends and current gaps in an industry’s technological landscape can be a springboard for further innovation. IPOPHL offers Commercial Patent Search and Patent Analytics services to ...US United States Prior art keywords aids ism pathogens destroying virus Prior art date 1994-09-22 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US08/658,955 ...About us Toggle submenu. About us. Find out more about our work, values ... Decisions sorted by number (Art. 112 EPC) Pending petitions for review (Art. 112a EPC) ... Patent knowledge: access our patent databases and search tools. New to patents? Home; Searching for patentsToll-Free. 800-786-9199. Local. 571-272-1000. TTY/TDD. 800-877-8339. Email. [email protected]. For general information, mailing addresses, Internet addresses, USPTO.gov accounts, how to use the online fee payment management system and contact information for other USPTO services.Aug 1, 2023 · For questions, technical issues or troubleshooting, please contact the Patent Electronic Business Center at [email protected] or 866-217-9197. Monday - Friday, 6 a.m. - 12 a.m. ET. share Share this page print Print this page. Additional information about this page. Filing and application management incorporated within a single user interface for ... Preliminary U.S. patent search 1.12. Keyword search pitfalls 1.13. Search example 1.14. STEP 1 1.15. Step 1: Description of the invention 1.16. ... Underneath each item is a patent number. The Facebook user comments in the caption: “Viruses can ONLY be patented if they are MAN MADE. ... US-Patent 8835624, is listed under H1N1.This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results.Please Enter Filing office. Select Logical Operator. Select Search Field. Please Enter International Patent Classification (IPC) Select Logical Operator. Select Search Field. Please Enter P.C.T. Application Number. Select Logical Operator. Select Search Field.Learn how to use Patent Public Search (PPUBS) Advanced in this recorded demonstration with emphasis on design patent searching. PPUBS is a publicly available USPTO search tool that permits searching U.S. patents and U.S. patent application publications. PPUBS has two interfaces: Basic and Advanced. Other ways to view this …*US patents prior to 1970 are searchable only by issue date, patent number, and current US classification. Search Strategies. When searching for patents in a particular subject area (not a known item), a recommended strategy is as follows:Jan 17, 2023 - Virtual. Getting started with the Patent Public Search tool: An overview. On February 1, 2022, the USPTO released its new patent search tool, Patent Public Search. Join us January 17 to learn how to apply your search skills using this advanced, time-saving patent search tool. Dec 9, 2022 - Virtual.Patents with an issue date on or after April 18, 2023 are issued as electronic patent grants (eGrants). Patent Center is available to all users to check application status, electronically file and manage patent applications in a single unified interface. Patent Center features a training mode, which is a simulator to practice filing.Enter the patent/published patent application number(s) you wish to search with a space between each one, as in this example: (“20180093696” “6707006” ”6392195”) Select the “PN” button: The search will execute with the .PN. searchable index applied to each item in the entire search string. Figure 8: PN button.Russian Federation. 26,924. 🡓13.1%. In 2022, China’s IP office received around 1.62 million patent applications. It was followed by the offices of the US, Japan, the Republic of Korea and the European Patent Office. The top 10 offices accounted for 91.6% of the world total in 2022. Note: * EPO is the European Patent Office. US6470214B1 2002-10-22 Method and device for implementing the radio frequency hearing effect. US7162042B2 2007-01-09 Modulator processing for a parametric speaker system. US6169813B1 2001-01-02 Frequency transpositional hearing aid with single sideband modulation. RU2569914C2 2015-12-10 Driving parametric loudspeakers. 4. Click on “Search” button to search for relevant patents; 5. On the result page, click on the patent title or patent number then the patent fullt-ext will be appeared. Advanced Search. The Advanced Search page allows you to query the US patent full-text database using the command line search syntax.Search specific patents by importing a CSV or list of patent publication or application numbers.Search by assignee name and location. Published on: December 19, 2023 17:34. This microtutorial for Patent Public Search will show you how to locate U.S. patents and published patent applications assigned to particular companies and other entities. You can search by assignee name, city, and state. Other ways to view this video. Watch it …Electronic Filing System (Patent Center) Apply for a patent using Patent Center: Patent Center - for filing, follow-on processing, managing applications, checking the status on and viewing associated documents for patent applications and more. Learn More About Patent Center - Information and Resources. Setup your Customer Number. Search by Cooperative Patent Classifications (CPCs): These are commonly used to represent ideas in place of keywords, and can also be entered in a search term box. If you're searching for seat belts , you could also search for B60R22/00 to retrieve documents that mention safety belts or body harnesses. Publication number: 20240129497. Abstract: The description relates to resource aware object detection for encoded video streams that can identify frames of the video stream that include an object of interest, such as a human, without decoding the frames. Type: Application. Filed: October 18, 2022.A plant patent search covers information about patents granted by the government to protect ownership rights of unique and asexually reproducing plants. As you might expect, plant patents are only a fraction of the patents filed every year. For example, in 2012 there were 576,763 patent applications filed—860 were granted.Patent Classification. Patent classification is a system for organizing all U.S. patent documents and other technical documents into specific technology groupings based on common subject matter. On January 1, 2013, the USPTO moved from using the United States Patent Classification (USPC) system to the Cooperative Patent Classification …For a patent that has the publication number 2013/9304893, its publication is the year 2013. The seven-digit number after the forward slash is unique and doesn't reflect the patent or application number. The purpose of all of these different numbers is to keep the many patents in their different stages well-organized. The U.S. Patent Office ...In human subjects, sensory resonances can be excited by subliminal atmospheric acoustic pulses that are tuned to the resonance frequency. The 1/2 Hz sensory resonance affects the autonomic nervous system and may cause relaxation, drowsiness, or sexual excitement, depending on the precise acoustic frequency near 1/2 Hz used. The effects of the 2.5 Hz …The United States Patent and Trademark Office (USPTO) is the federal agency for granting U.S. patents and registering trademarks. In doing this, the USPTO fulfills the mandate of Article I, Section 8, Clause 8, of the Constitution that the legislative branch "promote the Progress of Science and useful Arts, by securing for limited Times …UK patent search. You can search for patents in the UK using the Intellectual Property Office's (IPO): IPO also maintains separate lists for: To find new UK patent applications and changes to the patent register, check the IPO's patents journal. Businesses in Northern Ireland can get advice on IP matters, including patents, from Invest Northern ...Therefore, a search of all previous public disclosures, foreign patents and printed publications should be conducted. This tool was designed to help you get started. ... The searchable documents in this release contain all the pre-grant U.S. utility patent publications from 1/1/2001 to 4/30/2020.The following table displays annual, U.S. patent application and grant activity from 1790 to the present. Annual activity is determined based on the calendar year. Calendar Year. Utility Patent Applications (e) (inventions) Design Patent Applications. Plant Patent Applications.Starting October 1, 1992, design patent applications are assigned separate application serial numbers which are associated with newly established application series codes, beginning with "29". Starting June 8, 1995, the PTO began to accept provisional patent applications in accordance with implemented legislation arising from the GATT …Application number US07/664,176 Inventor Robert A. Monroe ... In a prior patent, U.S. Pat. No. 3,884,218, the present inventor described a method of inducing different levels of sleep, using the FFR technique, in which brain waves could be made to follow superimposed frequency patterns.
Search within the title, abstract, claims, or full patent document: You can restrict your search to a specific field using field names.. Use TI= to search in the title, AB= for the abstract, CL= for the claims, or TAC= for all three. For example, TI=(safety belt). Search by Cooperative Patent Classifications (CPCs): These are commonly used to represent …. Bom to sfo
References: U.S. and foreign patent documents and other publications cited as related prior art by the inventor and patent examiner. 57: Abstract: A brief, non-technical description of the invention. 58: Field of search: Classifications consulted by the patent examiner during the prior art search. 60: Number and date of provisional application: 63*US patents prior to 1970 are searchable only by issue date, patent number, and current US classification. Search Strategies. When searching for patents in a particular subject area (not a known item), a recommended strategy is as follows:For example, U.S. patents issued after July 13, 1836, start with a numerical sequence, and the length of this sequence has increased over time as more patents have been granted. Understanding the structure of patent numbers can help streamline your search by allowing you to quickly identify the jurisdiction and approximate age of the …Search by assignee name and location. Published on: December 19, 2023 17:34. This microtutorial for Patent Public Search will show you how to locate U.S. patents and published patent applications assigned to particular companies and other entities. You can search by assignee name, city, and state. Other ways to view this video. Watch it …Discover all statistics and data on U.S. patents now on statista.com! ... Search our report database ... Premium Statistic Number of U.S. patents issued FY 2017-FY 2021, by residency of ...You can query three Databases at once: US-PGPUB (U.S. pre-grant published patent applications back to 2001), USPAT (all U.S. patents, full-text searchable back to 1970, classification and patent number searching to 1790) and USOCR (OCR scanned pre-1970 U.S. patents, text searchable). By default, all three databases are selected but can be Basic Search has a Quick Lookup option for fast searching with a patent number or published patent application number. It also has an option for two search query text boxes, allowing up to two terms to be searched using a Boolean set operator (AND, OR, NOT). It offers a limited number of fields (searchable indexes). To run a Basic Search: 1 ... US United States Prior art keywords aids ism pathogens destroying virus Prior art date 1994-09-22 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US08/658,955 ... Searching for U.S. patents online. Search for United States patents on the website of the USPTO (United States Patent and Trademark Office) . Pre-1976 patent searches are limited to patent numbers and classification codes.. Database searches: 1790 to 1975 - Images of patent applications with specifications and diagrams.Searchable only by … If you are new to patent searches, or want to use the functionality that was available in the USPTO’s PatFT/AppFT, select ‘Basic Search’ to look for patents by keywords or common fields, such as inventor or publication number. Select ‘Advanced Search’ to use full query options as well as to further filter a patent search by database ... A provisional patent application allows you to file without a formal patent claim, oath or declaration, or any information disclosure (prior art) statement. Since June 8, 1995, the United States Patent and Trademark Office (USPTO) has offered inventors the option of filing a provisional application for patent which was designed to provide a ...Apr 25, 2011 · Online patent tools. Locate online patent services and information. Patent Center. Single interface replacement for EFS-Web, Private PAIR and Public PAIR. Electronic Business Center; Check application status. Check patent application status with Patent Center. Fees and payment. Pay maintenance fees and learn more about filing fees and other ... Enter a patent number or published patent application number in the Quick Lookup query box and select “Search.” Utility Patent numbers must be entered as a minimum of …Using the Public Search Facility. The United States Patent and Trademark Office (USPTO) Public Search Facility (PSF) contains electronic, print, and microfilm collections of patents and trademarks. Librarians and other USPTO trained staff are available from 8 a.m. to 5 p.m. Monday through Friday to help you find the information you need and ...References: U.S. and foreign patent documents and other publications cited as related prior art by the inventor and patent examiner. 57: Abstract: A brief, non-technical description of the invention. 58: Field of search: Classifications consulted by the patent examiner during the prior art search. 60: Number and date of provisional application: 63US11107588B2 US17/106,279 US202017106279A US11107588B2 US 11107588 B2 US11107588 B2 US 11107588B2 US 202017106279 A US202017106279 A US 202017106279A US 11107588 B2 US11107588 B2 US 11107588B2 ... Application number US17/106,279 Other versions US20210082583A1 (en Inventor Gal EHRLICH ... 2021-08 …The United States Patent and Trademark Office (USPTO) is the federal agency for granting U.S. patents and registering trademarks. In doing this, the USPTO fulfills the mandate of Article I, Section 8, Clause 8, of the Constitution that the legislative branch "promote the Progress of Science and useful Arts, by securing for limited Times …Justia Patents Producing Aural Effects By Stimulation US Patent for Method and device for implementing the radio frequency hearing effect Patent (Patent # 6,470,214) ... Patent number: 6470214 Type: Grant Filed: Dec 13, 1996 Date of Patent: Oct 22, 2002 Assignee ...Publication Publication Date Title. US6470214B1 2002-10-22 Method and device for implementing the radio frequency hearing effect. US7162042B2 2007-01-09 Modulator processing for a parametric speaker system. US6169813B1 2001-01-02 Frequency transpositional hearing aid with single sideband modulation..