H03G 3/30
In amplifiers having semiconductor devices
Official title: in amplifiers having semiconductor devices
H03G3/30 (In amplifiers having semiconductor devices) appears on 8,201 US grants and 6,717 published applications in this corpus.
Search patents in H03G- Granted patents
- 8,201
- Published applications
- 6,717
- Assignees
- 1,975
- Inventors
- 12,792
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 72 | 0 |
| 1977 | 56 | 0 |
| 1978 | 49 | 0 |
| 1979 | 50 | 0 |
| 1980 | 69 | 0 |
| 1981 | 61 | 0 |
| 1982 | 60 | 0 |
| 1983 | 62 | 0 |
| 1984 | 68 | 0 |
| 1985 | 82 | 0 |
| 1986 | 53 | 0 |
| 1987 | 62 | 0 |
| 1988 | 57 | 0 |
| 1989 | 59 | 0 |
| 1990 | 53 | 0 |
| 1991 | 56 | 0 |
| 1992 | 82 | 0 |
| 1993 | 88 | 0 |
| 1994 | 97 | 0 |
| 1995 | 87 | 0 |
| 1996 | 96 | 0 |
| 1997 | 94 | 0 |
| 1998 | 127 | 0 |
| 1999 | 124 | 0 |
| 2000 | 106 | 0 |
| 2001 | 116 | 52 |
| 2002 | 124 | 142 |
| 2003 | 131 | 217 |
| 2004 | 175 | 287 |
| 2005 | 125 | 285 |
| 2006 | 241 | 265 |
| 2007 | 218 | 305 |
| 2008 | 193 | 277 |
| 2009 | 215 | 283 |
| 2010 | 222 | 256 |
| 2011 | 266 | 250 |
| 2012 | 319 | 282 |
| 2013 | 303 | 263 |
| 2014 | 283 | 264 |
| 2015 | 304 | 288 |
| 2016 | 290 | 276 |
| 2017 | 366 | 311 |
| 2018 | 328 | 350 |
| 2019 | 408 | 336 |
| 2020 | 379 | 384 |
| 2021 | 276 | 275 |
| 2022 | 284 | 275 |
| 2023 | 249 | 271 |
| 2024 | 212 | 204 |
| 2025 | 171 | 177 |
| 2026 | 133 | 142 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03G 3/3036In high-frequency amplifiers or in frequency-changers2,729
- H03G 3/3052In bandpass amplifiers or in frequency-changers used in a heterodyne receiver1,767
- H03G 3/3005In amplifiers suitable for low-frequencies1,597
- H03G 3/34Muting amplifier when no signal is present902
- H03G 3/32The control being dependent upon ambient noise level or sound level898
- H03G 3/3089Control of digital or coded signals650
- H03G 3/3084In receivers or transmitters for electromagnetic waves other than radiowaves403
- H03G 3/3094In parametric amplifiers3
Recent patents
- Automatic volume leveling6 Oct 2026US 12,756,370 B2Bose Corporation
- Radio frequency low noise amplifiers29 Sep 2026US 12,750,021 B2Huawei Technologies Co., Ltd.
- Tunable effective inductance for multi-gain LNA with inductive source degeneration29 Sep 2026US 12,750,026 B2pSemi Corporation
- Power detectors with enhanced dynamic range29 Sep 2026US 12,750,076 B2Skyworks Solutions, Inc.
- 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
- 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
- Method and apparatus for using a sound sensor to adjust the audio output for a device326US 8,306,235 B2Apple Inc. · 2012
- Dynamic distortion elimination for output audio324US 8,045,721 B2Motorola Mobility LLC · 2011
- Adjusting dynamic range of an audio system319US 8,229,125 B2Bose Corporation · 2012