H04S 1/00
Two-channel systems
Official title: Two-channel systems (H04S5/00, H04S7/00 take precedence)
H04S1/00 (Two-channel systems) appears on 2,377 US grants and 2,352 published applications in this corpus.
Search patents in H04S- Granted patents
- 2,377
- Published applications
- 2,352
- Assignees
- 741
- Inventors
- 3,427
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 12 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 15 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 17 | 0 |
| 1994 | 12 | 0 |
| 1995 | 27 | 0 |
| 1996 | 24 | 0 |
| 1997 | 32 | 0 |
| 1998 | 49 | 0 |
| 1999 | 41 | 0 |
| 2000 | 27 | 0 |
| 2001 | 22 | 17 |
| 2002 | 30 | 69 |
| 2003 | 41 | 55 |
| 2004 | 40 | 69 |
| 2005 | 25 | 56 |
| 2006 | 45 | 77 |
| 2007 | 39 | 92 |
| 2008 | 44 | 99 |
| 2009 | 34 | 106 |
| 2010 | 76 | 52 |
| 2011 | 83 | 69 |
| 2012 | 104 | 72 |
| 2013 | 64 | 52 |
| 2014 | 57 | 72 |
| 2015 | 70 | 77 |
| 2016 | 92 | 112 |
| 2017 | 105 | 100 |
| 2018 | 129 | 130 |
| 2019 | 143 | 139 |
| 2020 | 150 | 150 |
| 2021 | 109 | 121 |
| 2022 | 119 | 140 |
| 2023 | 104 | 129 |
| 2024 | 126 | 125 |
| 2025 | 116 | 94 |
| 2026 | 48 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Colorless generation of elevation perceptual cues using all-pass filter networks6 Oct 2026US 12,756,986 B2Boomcloud 360, Inc.
- Camera microphone drainage system designed for beamforming29 Sep 2026US 12,750,617 B2GoPro, Inc.
- Minimizing echo caused by stereo audio via position-sensitive acoustic echo cancellation29 Sep 2026US 12,750,633 B2Google Inc.
- Smart device and control method therefor, computer readable storage medium22 Sep 2026US 12,745,042 B2Goertek Inc.
- Information processing device, information processing method, and information processing system15 Sep 2026US 12,739,589 B2Sony Group Corporation
- Camera Microphone Drainage System Designed For Beamforming8 Oct 2026US 2026/0313293 A1GoPro, Inc.
- Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal1 Oct 2026US 2026/0301751 A1Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Foldable electronic device including a plurality of speakers and method of operating the same1 Oct 2026US 2026/0304041 A1Samsung Electronics Co., Ltd.
- Acoustic reproduction system1 Oct 2026US 2026/0304062 A1Adaptive Audio Limited
- Method of processing audio for playback of immersive audio17 Sep 2026US 2026/0281643 A1Dolby Laboratories Licensing Corporation
Most cited
By later US patents
- Stereophonic reproduction method and apparatus387US 5,553,147 AOne, Inc. · 1996
- Sound stage controller for a near-field speaker-based audio system381US 9,215,545 B2Bose Corporation · 2015
- Orientation-based audio336US 8,879,761 B2Apple Inc. · 2014
- Intelligent clip mixing331US 8,165,321 B2Apple Inc. · 2012
- Electroacoustical transducing with low frequency augmenting devices304US 8,238,578 B2Bose Corporation · 2012