H04M 3/42391
Where the subscribers are hearing-impaired persons
Official title: {where the subscribers are hearing-impaired persons, e.g. telephone devices for the deaf}
H04M3/42391 (Where the subscribers are hearing-impaired persons) appears on 416 US grants and 380 published applications in this corpus.
Search patents in H04M- Granted patents
- 416
- Published applications
- 380
- Assignees
- 130
- Inventors
- 584
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 7 |
| 2003 | 11 | 10 |
| 2004 | 8 | 11 |
| 2005 | 9 | 11 |
| 2006 | 7 | 8 |
| 2007 | 9 | 20 |
| 2008 | 9 | 7 |
| 2009 | 6 | 5 |
| 2010 | 17 | 13 |
| 2011 | 12 | 10 |
| 2012 | 14 | 11 |
| 2013 | 13 | 12 |
| 2014 | 20 | 20 |
| 2015 | 17 | 16 |
| 2016 | 22 | 18 |
| 2017 | 23 | 24 |
| 2018 | 28 | 23 |
| 2019 | 24 | 19 |
| 2020 | 31 | 27 |
| 2021 | 25 | 26 |
| 2022 | 14 | 18 |
| 2023 | 30 | 22 |
| 2024 | 15 | 17 |
| 2025 | 17 | 14 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for dynamically detecting disabilities22 Sep 2026US 12,743,934 B2Capital One Services, LLC
- Integrated telecommunications network transcription systems and methods15 Sep 2026US 12,739,288 B2T-Mobile USA, Inc.
- Device independent text captioned telephone service18 Aug 2026US 12,712,968 B2Ultratec, Inc.
- Captioned telephone service system for user with speech disorder31 Mar 2026US 12,592,993 B2Mezmo Corporation
- Transcription presentation13 Jan 2026US 12,525,242 B2Sorenson IP Holdings, LLC
- Display of session captions on an endpoint using off-endpoint caption generation24 Sep 2026US 2026/0292066 A1Avaya Management L.P.
- Smart field communication devices with blind user interfaces6 Aug 2026US 2026/0228656 A1Weavix, Inc.
- Visual delivery of audio context for assistive technologies21 May 2026US 2026/0143063 A1Nagish Inc.
- Smart glasses for hearing assistance, hearing assistance method, and auxiliary system26 Mar 2026US 2026/0089447 A1Solos Technology (Shenzhen) Limited
- Systems and methods for processing and presenting conversations19 Mar 2026US 2026/0080877 A1Otter.ai, Inc.
Most cited
By later US patents
- Electronic translator for assisting communications339US 6,377,925 B1Interactive Solutions Corp. · 2002
- Transcription generation from multiple speech recognition systems312US 10,573,312 B1Sorenson IP Holdings, LLC · 2020
- Method and apparatus for relaying communication309US 6,389,114 B1AT&T Corp. · 2002
- Personal alerting apparatus and methods233US 6,703,930 B2Hewlett-Packard Development Company, L. P. · 2004
- Call-routing system and method232US 7,899,177 B1Sprint Communications Co.L.P. · 2011