H04R 3/002
Damping circuit arrangements for transducers
Official title: {Damping circuit arrangements for transducers, e.g. motional feedback circuits}
H04R3/002 (Damping circuit arrangements for transducers) appears on 716 US grants and 684 published applications in this corpus.
Search patents in H04R- Granted patents
- 716
- Published applications
- 684
- Assignees
- 325
- Inventors
- 1,220
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 3 |
| 2002 | 5 | 11 |
| 2003 | 7 | 9 |
| 2004 | 7 | 10 |
| 2005 | 3 | 5 |
| 2006 | 8 | 11 |
| 2007 | 5 | 11 |
| 2008 | 3 | 7 |
| 2009 | 3 | 16 |
| 2010 | 2 | 16 |
| 2011 | 7 | 6 |
| 2012 | 12 | 18 |
| 2013 | 20 | 42 |
| 2014 | 23 | 67 |
| 2015 | 52 | 101 |
| 2016 | 90 | 51 |
| 2017 | 69 | 34 |
| 2018 | 50 | 30 |
| 2019 | 50 | 31 |
| 2020 | 38 | 41 |
| 2021 | 35 | 34 |
| 2022 | 33 | 31 |
| 2023 | 30 | 30 |
| 2024 | 30 | 28 |
| 2025 | 25 | 18 |
| 2026 | 14 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Audio speaker system using piezo diaphragm2 Jun 2026US 12,648,359 B2Diodes Incorporated
- Zero-common-mode modulation with digital feedback to damp common-mode resonance and suppress cross-over distortion24 Sep 2026US 2026/0291447 A1Monolithic Power Systems, Inc.
- Distributed sound exposure estimation using host and remote device data10 Sep 2026US 2026/0266652 A1
- Force controlled loudspeaker protection system3 Sep 2026US 2026/0261797 A1Dolby Laboratories Licensing Corporation
- Audio device, signal processing method, and display method27 Aug 2026US 2026/0255116 A1Sony Group Corporation
- Linear motor magnet assembly and loudspeaker unit6 Aug 2026US 2026/0230756 A1Mayht Holding B.V.
Most cited
By later US patents
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- System output control method and apparatus202US 7,027,981 B22006
- Signal processing based on audio context194US 9,721,568 B1Amazon Technologies, Inc. · 2017