H03G 3/301
The gain being continuously variable
Official title: {the gain being continuously variable}
H03G3/301 (The gain being continuously variable) appears on 297 US grants and 232 published applications in this corpus.
Search patents in H03G- Granted patents
- 297
- Published applications
- 232
- Assignees
- 212
- Inventors
- 538
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 4 |
| 2003 | 1 | 2 |
| 2004 | 2 | 6 |
| 2005 | 2 | 10 |
| 2006 | 6 | 5 |
| 2007 | 6 | 12 |
| 2008 | 4 | 7 |
| 2009 | 4 | 13 |
| 2010 | 5 | 8 |
| 2011 | 10 | 9 |
| 2012 | 11 | 8 |
| 2013 | 10 | 10 |
| 2014 | 6 | 14 |
| 2015 | 9 | 10 |
| 2016 | 11 | 10 |
| 2017 | 14 | 12 |
| 2018 | 15 | 13 |
| 2019 | 16 | 11 |
| 2020 | 17 | 13 |
| 2021 | 9 | 15 |
| 2022 | 14 | 18 |
| 2023 | 14 | 8 |
| 2024 | 7 | 4 |
| 2025 | 6 | 6 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Common mode voltage dynamic modulation circuit, method thereof and class-D audio power amplifier4 Aug 2026US 12,700,830 B2Suzhou ACME Semi Co.Ltd.
- Variable gain amplifier2 Jun 2026US 12,647,081 B2Fujikura Ltd.
- Method for masking undesirable disturbing noises and vehicle10 Mar 2026US 12,573,363 B2Mercedes-Benz Group AG
- Parallel online meetings17 Feb 2026US 12,556,421 B2T-Mobile USA, Inc.
- Audio signal processing16 Dec 2025US 12,500,553 B2Solid State Logic UK Limited
- Microphones with signal-to-noise ratio on-demand1 Oct 2026US 2026/0303047 A1
- Current shunt monitoring system10 Sep 2026US 2026/0269798 A1Faraday Technology Corp.
- System and method for audio peak limiting16 Jul 2026US 2026/0205084 A1Harman International Industries, Incorporated
- Systems and methods for sensor baseline detection and compensation26 Mar 2026US 2026/0088774 A1Avago Technologies International Sales Pte. Limited
- A method and device for limiting power to protect power supply from overload in a multichannel audio amplifier4 Dec 2025US 2025/0373217 A1L-Acoustics
Most cited
By later US patents
- Digital amplifier169US 6,919,771 B2Denon, Ltd. · 2005
- Automatic gain control for a headset98US 5,369,711 ABellSouth Corporation · 1994
- Amplifier circuit and method of amplifying a signal in an amplifier circuit98US 8,198,941 B2Wolfson Microelectronics plc · 2012
- Automatic microphone mixer83US 3,992,584 A1976
- Apparatus and method for maintaining a constant speech envelope using variable coefficient automatic gain control74US 6,298,139 B1Transcrypt International, Inc. · 2001