H03G 3/00
Gain control in amplifiers or frequency changers
H03G3/00 (Gain control in amplifiers or frequency changers) appears on 9,968 US grants and 8,026 published applications in this corpus.
Search patents in H03G- Granted patents
- 9,968
- Published applications
- 8,026
- Assignees
- 2,309
- Inventors
- 14,819
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 89 | 0 |
| 1977 | 74 | 0 |
| 1978 | 63 | 0 |
| 1979 | 65 | 0 |
| 1980 | 86 | 0 |
| 1981 | 78 | 0 |
| 1982 | 76 | 0 |
| 1983 | 89 | 0 |
| 1984 | 98 | 0 |
| 1985 | 104 | 0 |
| 1986 | 64 | 0 |
| 1987 | 76 | 0 |
| 1988 | 71 | 0 |
| 1989 | 80 | 0 |
| 1990 | 69 | 0 |
| 1991 | 77 | 0 |
| 1992 | 96 | 0 |
| 1993 | 111 | 0 |
| 1994 | 120 | 0 |
| 1995 | 102 | 0 |
| 1996 | 110 | 0 |
| 1997 | 117 | 0 |
| 1998 | 140 | 0 |
| 1999 | 144 | 0 |
| 2000 | 119 | 0 |
| 2001 | 131 | 58 |
| 2002 | 134 | 153 |
| 2003 | 141 | 236 |
| 2004 | 197 | 317 |
| 2005 | 145 | 307 |
| 2006 | 260 | 291 |
| 2007 | 247 | 357 |
| 2008 | 229 | 325 |
| 2009 | 242 | 322 |
| 2010 | 259 | 294 |
| 2011 | 304 | 292 |
| 2012 | 362 | 331 |
| 2013 | 356 | 388 |
| 2014 | 348 | 386 |
| 2015 | 448 | 410 |
| 2016 | 426 | 363 |
| 2017 | 505 | 390 |
| 2018 | 437 | 447 |
| 2019 | 521 | 410 |
| 2020 | 450 | 428 |
| 2021 | 322 | 319 |
| 2022 | 319 | 308 |
| 2023 | 283 | 295 |
| 2024 | 244 | 240 |
| 2025 | 192 | 204 |
| 2026 | 148 | 155 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03G 3/20Automatic control8,717
- H03G 3/001Digital control of analog signals845
- H03G 3/02Manually-operated control637
- H03G 3/004Control by varying the supply voltage326
- H03G 3/002Control of digital or coded signals166
- H03G 3/007Control dependent on the supply voltage110
- H03G 3/005Control by a pilot signal71
- H03G 3/008Control by switched capacitors34
Recent patents
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- Measurement and calibration of mismatch in an isolation channel29 Sep 2026US 12,750,078 B2Skyworks Solutions, Inc.
- Noise reduction earphone and earphone noise reduction method8 Oct 2026US 2026/0311673 A1Shenzhen Dancing Future Technology Ltd.
- Amplifier gain control for constant input impedance8 Oct 2026US 2026/0312559 A1pSemi Corporation
- Electrical isolation monitoring1 Oct 2026US 2026/0296243 A1Rivian IP Holdings, LLC
- Robust voice activity detector system for use with an earphone1 Oct 2026US 2026/0299875 A1ST DetectTech, LLC
- Systems and Methods for Intelligent Transimpedance Amplifiers1 Oct 2026US 2026/0303039 A1TeraSignal LLC
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- Method and device for obtaining playlist content over a network1,821US 8,045,952 B2Horsham Enterprises, LLC · 2011
- Method and device for an internet radio capable of obtaining playlist content from a content server732US 8,050,652 B2Horsham Enterprises, LLC · 2011
- Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file389US 7,072,477 B1Apple Computer, Inc. · 2006
- Apparatus and method for attenuating a multicarrier input signal of a linear device334US 5,384,547 AMotorola, Inc. · 1995