H03G 7/002
In untuned or low-frequency amplifiers
Official title: {in untuned or low-frequency amplifiers, e.g. audio amplifiers (H03G7/007, H03G7/001, H03G7/008, H03G7/02, H03G7/06 take precedence)}
H03G7/002 (In untuned or low-frequency amplifiers) appears on 625 US grants and 516 published applications in this corpus.
Search patents in H03G- Granted patents
- 625
- Published applications
- 516
- Assignees
- 298
- Inventors
- 912
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 13 | 0 |
| 1984 | 10 | 0 |
| 1985 | 11 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 11 | 0 |
| 1991 | 3 | 0 |
| 1992 | 12 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 9 |
| 2003 | 3 | 8 |
| 2004 | 5 | 5 |
| 2005 | 4 | 6 |
| 2006 | 5 | 4 |
| 2007 | 3 | 5 |
| 2008 | 4 | 7 |
| 2009 | 7 | 9 |
| 2010 | 6 | 20 |
| 2011 | 5 | 8 |
| 2012 | 9 | 23 |
| 2013 | 19 | 19 |
| 2014 | 12 | 17 |
| 2015 | 21 | 29 |
| 2016 | 28 | 50 |
| 2017 | 46 | 33 |
| 2018 | 45 | 44 |
| 2019 | 58 | 45 |
| 2020 | 44 | 47 |
| 2021 | 33 | 34 |
| 2022 | 32 | 20 |
| 2023 | 26 | 24 |
| 2024 | 24 | 21 |
| 2025 | 16 | 18 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatic volume leveling6 Oct 2026US 12,756,370 B2Bose Corporation
- Clipping prevention in switched mode drivers26 May 2026US 12,640,694 B2Cirrus Logic, Inc.
- System and method for detecting analog signals on an amplifier input and gating the same28 Apr 2026US 12,615,025 B2Crestron Electronics, Inc.
- Power-adaptive active noise reduction (ANR) headset6 Jan 2026US 12,518,731 B2Bose Corporation
- Method for acoustic adjustment using a loudness value and a clipping occurrence rate of a test sound source6 Jan 2026US 12,519,441 B2Panasonic Intellectual Property Management Co., Ltd.
- System and method for audio peak limiting16 Jul 2026US 2026/0205084 A1Harman International Industries, Incorporated
- Compression method for hearing aids14 May 2026US 2026/0136141 A1
- Power-Adaptive Active Noise Reduction (ANR) Headset2 Apr 2026US 2026/0094598 A1Bose Corporation
- Audio Notifications26 Mar 2026US 2026/0088787 A1Sonos, Inc.
- Media Playback System with Maximum Volume Setting5 Mar 2026US 2026/0066863 A1Sonos, Inc.
Most cited
By later US patents
- Adjusting dynamic range of an audio system319US 8,229,125 B2Bose Corporation · 2012
- Time dependent, variable amplitude threshold output circuit for frequency variant and frequency invariant signal discrimination212US 4,928,307 AACS Communications, Inc. · 1990
- System output control method and apparatus202US 7,027,981 B22006
- Content aware audio ducking199US 9,536,541 B2Apple Inc. · 2017
- Method of detecting signal clipping in a wearable ambulatory medical device156US 8,600,486 B2ZOLL Medical Corporation · 2013