H04R 27/02
Amplifying systems for the deaf
H04R27/02 (Amplifying systems for the deaf) appears on 47 US grants and 63 published applications in this corpus.
Search patents in H04R- Granted patents
- 47
- Published applications
- 63
- Assignees
- 33
- Inventors
- 101
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 0 | 4 |
| 2014 | 3 | 3 |
| 2015 | 3 | 5 |
| 2016 | 2 | 4 |
| 2017 | 2 | 5 |
| 2018 | 5 | 8 |
| 2019 | 4 | 5 |
| 2020 | 4 | 5 |
| 2021 | 4 | 3 |
| 2022 | 5 | 0 |
| 2023 | 1 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Smart phone network for hearing impaired18 Aug 2026US 12,712,964 B2T-Mobile Innovations LLC
- Hearing-assist systems and methods for audio quality enhancements in performance venues11 Nov 2025US 12,470,869 B2The Epstein Hear Us Now Foundation
- Location-based systems and methods for initiating wireless device action31 Dec 2024US 12,182,472 B2Bose Corporation
- Hearing-assist systems and methods for audio quality enhancements in performance venues23 Apr 2024US 11,968,504 B1The Epstein Hear Us Now Foundation
- Elevator sound systems16 May 2023US 11,649,137 B2Otis Elevator Company
- Hearing-assist systems and methods for audio quality enhancements in performance venues23 Jul 2026US 2026/0214385 A1The Epstein Hear Us Now Foundation
- Frequency-based compensation filter for in-ear monitors or headphones30 Apr 2026US 2026/0122437 A1Sound Devices LLC
- Hearing-assist systems and methods for audio quality enhancements in performance venues29 May 2025US 2025/0175736 A1The Epstein Hear Us Now Foundation
- Method and system for providing assistive listening1 May 2025US 2025/0142272 A1Sonova AG
- Location-based systems and methods for initiating wireless device action27 Feb 2025US 2025/0068387 A1Bose Corporation
Most cited
By later US patents
- Enhanced concert audio system352US 5,668,884 AClair Bros. Audio Enterprises, Inc. · 1997
- Low power system and method for communicating audio information to patrons having portable radio receivers90US 4,165,487 A1979
- Portable hearing-assistive sound unit system89US 8,995,688 B12015
- Personalization of auditory stimulus28US 9,497,530 B1Nura Holdings Pty Ltd · 2016
- Communication system25US 8,340,331 B2Carj Develpment Limited · 2012