H03G 9/00
Combinations of two or more types of control
Official title: Combinations of two or more types of control, e.g. gain control and tone control
H03G9/00 (Combinations of two or more types of control) appears on 901 US grants and 745 published applications in this corpus.
Search patents in H03G- Granted patents
- 901
- Published applications
- 745
- Assignees
- 355
- Inventors
- 1,243
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 16 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 19 | 0 |
| 1985 | 13 | 0 |
| 1986 | 8 | 0 |
| 1987 | 14 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 9 |
| 2003 | 3 | 6 |
| 2004 | 5 | 11 |
| 2005 | 5 | 17 |
| 2006 | 6 | 12 |
| 2007 | 10 | 7 |
| 2008 | 7 | 19 |
| 2009 | 8 | 24 |
| 2010 | 4 | 33 |
| 2011 | 14 | 39 |
| 2012 | 32 | 39 |
| 2013 | 32 | 28 |
| 2014 | 37 | 42 |
| 2015 | 40 | 45 |
| 2016 | 53 | 49 |
| 2017 | 66 | 51 |
| 2018 | 56 | 44 |
| 2019 | 58 | 65 |
| 2020 | 60 | 51 |
| 2021 | 42 | 42 |
| 2022 | 33 | 30 |
| 2023 | 34 | 27 |
| 2024 | 25 | 25 |
| 2025 | 26 | 18 |
| 2026 | 8 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatic volume leveling6 Oct 2026US 12,756,370 B2Bose Corporation
- Concept for combined dynamic range compression and guided clipping prevention for audio devices8 Sep 2026US 12,731,595 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Concept for combined dynamic range compression and guided clipping prevention for audio devices1 Sep 2026US 12,725,622 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Audio equalization metadata11 Aug 2026US 12,707,220 B2Nura Holdings Pty Ltd
- Dolby ATMOS master compressor/limiter2 Jun 2026US 12,647,742 B2Dolby Laboratories Licensing Corporation
- System and method to provide personalized audio streaming and rendering13 Aug 2026US 2026/0236215 A1
- Techniques for automatic equalization of audio23 Jul 2026US 2026/0213720 A1Harman Becker Automotive Systems GmbH
- Hearing-assist systems and methods for audio quality enhancements in performance venues23 Jul 2026US 2026/0214385 A1The Epstein Hear Us Now Foundation
- Method for controlling illumination effect, electronic device and storage medium25 Jun 2026US 2026/0180536 A1Shenzhen Mango Science and Technology Innovation Co., Ltd.
- Sound quality enhancement system and device28 May 2026US 2026/0149419 A1
Most cited
By later US patents
- Adaptive, programmable signal processing and filtering for hearing aids325US 5,027,410 AWisconsin Alumni Research Foundation · 1991
- Adjusting dynamic range of an audio system319US 8,229,125 B2Bose Corporation · 2012
- Method for automatically adjusting audio response for improved intelligibility272US 5,790,671 AEricsson Inc. · 1998
- Approach for partially preserving music in the presence of intelligible speech203US 9,615,170 B2Harman International Industries, Incorporated · 2017
- System output control method and apparatus202US 7,027,981 B22006