H04M 1/2475
For a hearing impaired user
Official title: {for a hearing impaired user}
H04M1/2475 (For a hearing impaired user) appears on 188 US grants and 169 published applications in this corpus.
Search patents in H04M- Granted patents
- 188
- Published applications
- 169
- Assignees
- 63
- Inventors
- 198
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 6 |
| 2003 | 6 | 5 |
| 2004 | 1 | 5 |
| 2005 | 3 | 6 |
| 2006 | 5 | 6 |
| 2007 | 1 | 3 |
| 2008 | 4 | 6 |
| 2009 | 3 | 2 |
| 2010 | 5 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 7 | 5 |
| 2014 | 5 | 6 |
| 2015 | 5 | 6 |
| 2016 | 11 | 7 |
| 2017 | 3 | 16 |
| 2018 | 11 | 10 |
| 2019 | 12 | 10 |
| 2020 | 16 | 15 |
| 2021 | 11 | 9 |
| 2022 | 6 | 13 |
| 2023 | 16 | 8 |
| 2024 | 6 | 9 |
| 2025 | 9 | 10 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device independent text captioned telephone service18 Aug 2026US 12,712,968 B2Ultratec, Inc.
- User interface to select or change caption language for captioned telephone service system17 Mar 2026US 12,581,011 B2Mezmo Corporation
- Hearing accommodation23 Dec 2025US 12,506,832 B2Sorenson IP Holdings, LLC
- Semiautomated relay method and apparatus2 Dec 2025US 12,488,799 B2Ultratec, Inc.
- 911 call assistance for assisted device user2 Dec 2025US 12,489,839 B2Ultratec, Inc.
- Semiautomated relay method and apparatus25 Dec 2025US 2025/0391402 A1Ultratec, Inc.
- Semiautomated relay method and apparatus25 Sep 2025US 2025/0299673 A1Ultratec, Inc.
- Transcription presentation of communication sessions14 Aug 2025US 2025/0259632 A1Sorenson IP Holdings, LLC
- Semiautomated relay method and apparatus24 Jul 2025US 2025/0239261 A1Ultratec, Inc.
- User interface to select or change caption language for captioned telephone service system3 Jul 2025US 2025/0220112 A1Mezmo Corporation
Most cited
By later US patents
- Transcription generation from multiple speech recognition systems312US 10,573,312 B1Sorenson IP Holdings, LLC · 2020
- Telephone for the deaf and method of using same273US 5,982,853 A1999
- Method and apparatus for a communication device for use by a hearing impaired/mute or deaf person or in silent environments231US 5,995,590 AInternational Business Machines Corporation · 1999
- Bedside control unit for a hospital bed221US 5,542,138 A1996
- Voice bridge for relay center152US 5,081,673 A1992