H03G 3/22
In amplifiers having discharge tubes
Official title: in amplifiers having discharge tubes
H03G3/22 (In amplifiers having discharge tubes) appears on 85 US grants and 72 published applications in this corpus.
Search patents in H03G- Granted patents
- 85
- Published applications
- 72
- Assignees
- 64
- Inventors
- 141
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 4 |
| 2012 | 0 | 4 |
| 2013 | 2 | 1 |
| 2014 | 3 | 2 |
| 2015 | 6 | 7 |
| 2016 | 4 | 3 |
| 2017 | 3 | 2 |
| 2018 | 5 | 3 |
| 2019 | 8 | 5 |
| 2020 | 7 | 12 |
| 2021 | 6 | 8 |
| 2022 | 8 | 6 |
| 2023 | 12 | 6 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Zoned audio duck for in car conversation7 Apr 2026US 12,598,424 B2Panasonic Automotive Systems America, LLC.
- System and method for automatic adjustment of reference gain6 Jan 2026US 12,519,438 B2Shure Acquisition Holdings, Inc.
- Sound generation device and applications23 Sep 2025US 12,425,772 B2Sonicedge Ltd.
- Devices and methods for controlling audio output in a telematics system10 Jun 2025US 12,328,557 B2Geotab Inc.
- Dynamic audio equalization3 Dec 2024US 12,159,084 B2Harley-Davidson Motor Company
- System and method for automatic adjustment of reference gain24 Sep 2026US 2026/0291458 A1Shure Acquisition Holdings, Inc.
- Zoned audio duck for in car conversation25 Jun 2026US 2026/0181328 A1Panasonic Automotive Systems America, LLC.
- Sound Generation Device And Applications8 May 2025US 2025/0150759 A1Sonicedge Ltd.
- Zoned Audio Duck For In Car Conversation11 Apr 2024US 2024/0121555 A1Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
- Devices and methods for controlling audio output in a telematics system16 Nov 2023US 2023/0367540 A1Geotab Inc.
Most cited
By later US patents
- Active APD gain control for an optical receiver72US 5,929,982 ATektronix, Inc. · 1999
- Stabilized microwave power amplifier system22US 4,485,349 AVarian Associates, Inc. · 1984
- High power klystron amplifier for supplying a variable load16US 4,591,799 AThomson-CSF · 1986
- Method, apparatus and computer-readable media utilizing positional information to derive AGC output parameters13US 10,387,108 B2Nureva, Inc. · 2019
- Variable power amplifier for audio frequency signals and method13US 4,644,289 ACarter Duncan Corp. · 1987