H04R 1/2869
Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired
Official title: {Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself}
H04R1/2869 (Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired) appears on 1,650 US grants and 1,880 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,650
- Published applications
- 1,880
- Assignees
- 548
- Inventors
- 2,959
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 10 |
| 2003 | 6 | 5 |
| 2004 | 9 | 5 |
| 2005 | 2 | 16 |
| 2006 | 11 | 16 |
| 2007 | 1 | 15 |
| 2008 | 8 | 13 |
| 2009 | 7 | 21 |
| 2010 | 11 | 23 |
| 2011 | 15 | 17 |
| 2012 | 23 | 35 |
| 2013 | 32 | 42 |
| 2014 | 51 | 57 |
| 2015 | 55 | 63 |
| 2016 | 58 | 88 |
| 2017 | 88 | 124 |
| 2018 | 102 | 121 |
| 2019 | 155 | 125 |
| 2020 | 138 | 142 |
| 2021 | 104 | 163 |
| 2022 | 123 | 145 |
| 2023 | 141 | 181 |
| 2024 | 151 | 187 |
| 2025 | 155 | 137 |
| 2026 | 99 | 127 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sound-absorbing material block, method for preparing thereof, and electronic device29 Sep 2026US 12,747,189 B2AAG Technologies (Nanjing) Co., Ltd.
- Hierarchical porous ZSM-5 molecular sieve, preparation method therefor, HZSM-5 molecular sieve prepared therefrom, and use of molecular sieve22 Sep 2026US 12,741,877 B2SSI New Material (Zhenjiang) Co., Ltd.
- Electronic device and damper22 Sep 2026US 12,745,034 B2Micro-Star Int’l Co.,Ltd.
- Acoustic signal output device15 Sep 2026US 12,739,559 B2NTT, Inc.
- Earphones and transducer devices thereof15 Sep 2026US 12,739,566 B2Shenzhen Shokz Co., Ltd.
- Sound-integrated display apparatus and an electronic apparatus8 Oct 2026US 2026/0313290 A1Postech Research and Business Development Foundation
- Transducer devices1 Oct 2026US 2026/0304031 A1Shenzhen Shokz Co., Ltd.
- Techniques for Using Floodlight LEDs When Imaging Sensors Have an Insufficient Level of Detail for Identifying Hand Gestures, and Mixed-Reality Systems and Methods of Using These Techniques24 Sep 2026US 2026/0292120 A1Meta Platforms Technologies, LLC
- Wearable audio device including an improved ear cup24 Sep 2026US 2026/0292395 A1Bose Corporation
- Vehicle loudspeaker and sound system17 Sep 2026US 2026/0281610 A1Suzhou Sonavox Electronics Co., Ltd.
Most cited
By later US patents
- Open-air type earphone201US 4,742,887 ASony Corporation · 1988
- Loudspeaker array with signal dependent radiation pattern155US 5,870,484 A1999
- Communications terminal having a single transducer for handset and handsfree receive functionality99US 5,790,679 ANorthern Telecom Limited · 1998
- Method of manufacturing a microphone95US 7,434,305 B2Knowles Electronics, LLC · 2008
- Silicon condenser microphone and manufacturing method91US 7,381,589 B2Knowles Electronics, LLC · 2008