H04M 1/19
Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate
Official title: Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor (circuit arrangements for preventing eavesdropping H04M1/68; telephone cabinets E04H1/14)
H04M1/19 (Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate) appears on 210 US grants and 151 published applications in this corpus.
Search patents in H04M- Granted patents
- 210
- Published applications
- 151
- Assignees
- 113
- Inventors
- 446
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 4 |
| 2003 | 2 | 3 |
| 2004 | 2 | 11 |
| 2005 | 0 | 6 |
| 2006 | 3 | 2 |
| 2007 | 6 | 8 |
| 2008 | 1 | 5 |
| 2009 | 4 | 6 |
| 2010 | 4 | 8 |
| 2011 | 2 | 7 |
| 2012 | 9 | 3 |
| 2013 | 5 | 10 |
| 2014 | 10 | 9 |
| 2015 | 7 | 9 |
| 2016 | 14 | 12 |
| 2017 | 9 | 8 |
| 2018 | 5 | 4 |
| 2019 | 4 | 7 |
| 2020 | 5 | 5 |
| 2021 | 6 | 3 |
| 2022 | 3 | 6 |
| 2023 | 5 | 4 |
| 2024 | 4 | 2 |
| 2025 | 2 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electroacoustic module and electronic device21 Apr 2026US 12,610,166 B2Vivo Mobile Communication Co., Ltd.
- Speech confidentiality monitoring and alerting17 Feb 2026US 12,556,927 B2Cisco Technology, Inc.
- Electronic device and control method thereof3 Feb 2026US 12,542,844 B2Vivo Mobile Communication Co., Ltd.
- Confidential audio protection system23 Sep 2025US 12,424,192 B1United Services Automobile Association (USAA)
- Sound masking method and apparatus, and terminal device13 May 2025US 12,300,208 B2Huawei Technologies Co., Ltd.
- Device for the tap-proof placement of a mobile telephone17 Sep 2026US 2026/0280747 A1Guardian, LLC
- Audio processing method and electronic device20 Aug 2026US 2026/0247074 A1Honor Device Co., Ltd.
- Soundproofable Device Case26 Feb 2026US 2026/0059033 A1Bodyguard Technologies, Inc.
- Device operation method and apparatus, and electronic device20 Nov 2025US 2025/0358559 A1Huawei Technologies Co., Ltd.
- Speech confidentiality monitoring and alerting24 Jul 2025US 2025/0240626 A1Cisco Technology, Inc.
Most cited
By later US patents
- Unidirectional ear microphone and method273US 5,363,444 AJabra Corporation · 1994
- Adaptive noise cancellation and speech enhancement system and apparatus therefor259US 5,251,263 AAndrea Electronics Corporation · 1993
- Noise cancellation earpiece216US 6,445,799 B1GN ReSound North America Corporation · 2002
- Ear-hang type headset165US 5,210,792 AMatsushita Electric Industrial Co., Ltd. · 1993
- Noise cancellation headset for use with stand or worn on ear134US 5,715,321 AAndrea Electronics Corporation · 1998