H03G 3/04
In untuned amplifiers
Official title: in untuned amplifiers
H03G3/04 (In untuned amplifiers) appears on 309 US grants and 201 published applications in this corpus.
Search patents in H03G- Granted patents
- 309
- Published applications
- 201
- Assignees
- 172
- Inventors
- 533
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 3 |
| 2008 | 4 | 5 |
| 2009 | 4 | 3 |
| 2010 | 3 | 5 |
| 2011 | 5 | 6 |
| 2012 | 5 | 11 |
| 2013 | 4 | 10 |
| 2014 | 6 | 20 |
| 2015 | 15 | 18 |
| 2016 | 18 | 17 |
| 2017 | 20 | 15 |
| 2018 | 26 | 25 |
| 2019 | 20 | 17 |
| 2020 | 14 | 10 |
| 2021 | 7 | 4 |
| 2022 | 6 | 10 |
| 2023 | 8 | 2 |
| 2024 | 6 | 5 |
| 2025 | 4 | 6 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Command dial in a media playback system18 Aug 2026US 12,710,917 B2Sonos, Inc.
- Networked playback device24 Feb 2026US 12,561,109 B2Sonos, Inc.
- Sound quality enhancement system and device20 Jan 2026US 12,531,521 B2
- Power amplification circuit, radio-frequency circuit, and communication device2 Sep 2025US 12,407,307 B2Murata Manufacturing Co., Ltd.
- Control based on proximity17 Jun 2025US 12,333,209 B2Sonos, Inc.
- Differential amplifier with rf switch function20 Aug 2026US 2026/0246435 A1Fujikura Ltd.
- Sound quality enhancement system and device28 May 2026US 2026/0149419 A1
- Control Based On Proximity1 Jan 2026US 2026/0003565 A1Sonos, Inc.
- Device for Adjusting the Volume of an Audio Signal in an Audio System for a Motor Vehicle11 Dec 2025US 2025/0380085 A1Bayerische Motoren Werke Aktiengesellschaft
- Gain stage degeneration inductor switching without the use of switches30 Oct 2025US 2025/0337381 A1Skyworks Solutions, Inc.
Most cited
By later US patents
- User profile based audio adjustment techniques219US 8,989,406 B2Sony Corporation · 2015
- Remote-control system for coin-operated phonographs186US 4,413,260 AStern Electronics, Inc. · 1983
- Volume interactions for connected playback devices181US 8,995,687 B2Sonos, Inc. · 2015
- Leaving group and smart line-in processing127US 10,108,393 B2Sonos, Inc. · 2018
- Volume limit87US 9,678,708 B2Sonos, Inc. · 2017