H04S 3/00
Systems employing more than two channels
Official title: Systems employing more than two channels, e.g. quadraphonic (H04S5/00, H04S7/00 take precedence)
H04S3/00 (Systems employing more than two channels) appears on 3,887 US grants and 4,232 published applications in this corpus.
Search patents in H04S- Granted patents
- 3,887
- Published applications
- 4,232
- Assignees
- 917
- Inventors
- 4,551
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 35 | 0 |
| 1977 | 11 | 0 |
| 1978 | 17 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 8 | 0 |
| 1990 | 12 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 16 | 0 |
| 1994 | 14 | 0 |
| 1995 | 9 | 0 |
| 1996 | 15 | 0 |
| 1997 | 29 | 0 |
| 1998 | 50 | 0 |
| 1999 | 26 | 0 |
| 2000 | 20 | 0 |
| 2001 | 16 | 19 |
| 2002 | 19 | 38 |
| 2003 | 18 | 65 |
| 2004 | 31 | 68 |
| 2005 | 32 | 90 |
| 2006 | 45 | 108 |
| 2007 | 48 | 116 |
| 2008 | 44 | 135 |
| 2009 | 51 | 135 |
| 2010 | 77 | 105 |
| 2011 | 77 | 100 |
| 2012 | 165 | 119 |
| 2013 | 116 | 103 |
| 2014 | 102 | 107 |
| 2015 | 111 | 133 |
| 2016 | 160 | 213 |
| 2017 | 242 | 250 |
| 2018 | 255 | 288 |
| 2019 | 351 | 347 |
| 2020 | 326 | 311 |
| 2021 | 245 | 257 |
| 2022 | 241 | 257 |
| 2023 | 200 | 243 |
| 2024 | 241 | 258 |
| 2025 | 232 | 217 |
| 2026 | 118 | 150 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device and method for expanding 7-channel audio by using radio transmission6 Oct 2026US 12,756,977 B2Samsung Electronics Co., Ltd.
- Colorless generation of elevation perceptual cues using all-pass filter networks6 Oct 2026US 12,756,986 B2Boomcloud 360, Inc.
- Information processing apparatus and method, and program29 Sep 2026US 12,750,628 B2Sony Group Corporation
- Techniques for outputting audio through a plurality of drivers within a same audio output device29 Sep 2026US 12,750,634 B2Harman International Industries, Incorporated
- Efficient rendering of virtual soundfields22 Sep 2026US 12,745,053 B2Magic Leap, Inc.
- A method, device, system, and software for a computer-implemented method for playback of game audio by use of representative audio objects at runtime8 Oct 2026US 2026/0306950 A1Dolby Laboratories Licensing Corporation
- Method and device for decoding an audio soundfield representation8 Oct 2026US 2026/0311709 A1Dolby Laboratories Licensing Corporation
- Performing common audio convolutions using iso-trajectories in three dimensional (3d) space8 Oct 2026US 2026/0313308 A1Google Inc.
- Failure Recovery of Wearable Playback Device8 Oct 2026US 2026/0313313 A1Sonos, Inc.
- Multi-Zone Setup And Configuration Of Multi-Player Playback Devices1 Oct 2026US 2026/0299878 A1Sonos, Inc.
Most cited
By later US patents
- Wireless and wired speaker hub for a home theater system1,803US 7,483,538 B2KSC Industries, Inc. · 2009
- Wired, wireless, infrared, and powerline audio entertainment systems1,763US 7,853,341 B2KSC Industries, Inc. · 2010
- Wired, wireless, infrared, and powerline audio entertainment systems1,762US 8,103,009 B2KSC Industries, Inc. · 2012
- Unification of multimedia devices1,620US 7,987,294 B2Altec Lansing Australia Pty Limited · 2011
- Coding method and apparatus for multiple channels of audio information representing three-dimensional sound fields406US 6,021,386 ADolby Laboratories Licensing Corporation · 2000