H04R 2420/01
Input selection or mixing for amplifiers or loudspeakers
H04R2420/01 (Input selection or mixing for amplifiers or loudspeakers) appears on 763 US grants and 967 published applications in this corpus.
Search patents in H04R- Granted patents
- 763
- Published applications
- 967
- Assignees
- 395
- Inventors
- 1,770
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 6 |
| 2004 | 2 | 8 |
| 2005 | 2 | 9 |
| 2006 | 4 | 6 |
| 2007 | 5 | 14 |
| 2008 | 4 | 10 |
| 2009 | 2 | 10 |
| 2010 | 5 | 20 |
| 2011 | 12 | 20 |
| 2012 | 17 | 15 |
| 2013 | 14 | 39 |
| 2014 | 19 | 37 |
| 2015 | 35 | 50 |
| 2016 | 46 | 55 |
| 2017 | 60 | 72 |
| 2018 | 54 | 58 |
| 2019 | 70 | 47 |
| 2020 | 66 | 77 |
| 2021 | 60 | 83 |
| 2022 | 59 | 77 |
| 2023 | 65 | 83 |
| 2024 | 73 | 66 |
| 2025 | 45 | 56 |
| 2026 | 35 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Playback device pairing22 Sep 2026US 12,745,041 B2Sonos, Inc.
- Apparatus and method for generating control signals for a loudspeaker system with spectral interlacing in the lower frequency range15 Sep 2026US 12,739,591 B2Kaetel Systems GmbH
- Modular cabinet speaker system8 Sep 2026US 12,732,726 B2
- Earphone connection method and apparatus, earphone, and medium8 Sep 2026US 12,732,741 B2Goertek Inc.
- Method and apparatus for speaker matrix1 Sep 2026US 12,726,765 B2Bryx, Inc.
- Flexible networking system and method for supporting multi-level cascaded omnidirectional speakerphone3 Sep 2026US 2026/0261798 A1Shen Zhen Proitav Technology Co. Ltd.
- Automated local audio reinforcement and voice lift systems and methods27 Aug 2026US 2026/0253598 A1Shure Acquisition Holdings, Inc.
- Sleep modes for plugged-in players20 Aug 2026US 2026/0247075 A1
- Synchronization between devices in emergency vehicles20 Aug 2026US 2026/0247119 A1Whelen Engineering Company, Inc.
- Audio signal decorrelator structure for rendering source extent13 Aug 2026US 2026/0238923 A1
Most cited
By later US patents
- Method and device for obtaining playlist content over a network1,821US 8,045,952 B2Horsham Enterprises, LLC · 2011
- Method and device for an internet radio capable of obtaining playlist content from a content server732US 8,050,652 B2Horsham Enterprises, LLC · 2011
- Stereophonic reproduction maintaining means and methods for operation in horizontal and vertical A/V appliance positions442US 6,882,335 B2Nokia Corporation · 2005
- Method and apparatus for automatically enabling subwoofer channel audio based on detection of subwoofer device364US 7,792,311 B1Sonos, Inc. · 2010
- Intercom apparatus for integrating disparate audio sources for use in light aircraft or similar high noise environments326US 4,941,187 A1990