H04R 1/283
Using a passive diaphragm
Official title: {using a passive diaphragm}
H04R1/283 (Using a passive diaphragm) appears on 525 US grants and 552 published applications in this corpus.
Search patents in H04R- Granted patents
- 525
- Published applications
- 552
- Assignees
- 248
- Inventors
- 1,008
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 10 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 5 |
| 2002 | 5 | 7 |
| 2003 | 5 | 5 |
| 2004 | 5 | 13 |
| 2005 | 3 | 9 |
| 2006 | 5 | 8 |
| 2007 | 10 | 15 |
| 2008 | 5 | 14 |
| 2009 | 7 | 9 |
| 2010 | 5 | 12 |
| 2011 | 13 | 7 |
| 2012 | 13 | 18 |
| 2013 | 11 | 21 |
| 2014 | 12 | 21 |
| 2015 | 16 | 29 |
| 2016 | 23 | 27 |
| 2017 | 31 | 31 |
| 2018 | 25 | 35 |
| 2019 | 42 | 32 |
| 2020 | 31 | 44 |
| 2021 | 39 | 31 |
| 2022 | 30 | 44 |
| 2023 | 29 | 42 |
| 2024 | 35 | 32 |
| 2025 | 27 | 25 |
| 2026 | 20 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mems device, nearfield loudspeaker, hearable, mems pump, loudspeaker and method for controlling an mems device18 Aug 2026US 12,709,536 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Speaker module and electronic device11 Aug 2026US 12,707,191 B2Honor Device Co., Ltd.
- Acoustic output apparatus, earphone and ultra-linear multi-magnetic double-diaphragm loudspeaker14 Jul 2026US 12,684,286 B2Shenzhen Dancing Future Technology Ltd.
- Signal limit based on detecting clipping23 Jun 2026US 12,666,197 B2Sonos, Inc.
- Microphone circuit for the linearization of the proximity effect in a dynamic directional microphone16 Jun 2026US 12,659,654 B2Austrian Audio GmbH
- Predictive Signal Correction1 Oct 2026US 2026/0304030 A1Sonos, Inc.
- Grille integrated acoustic filter3 Sep 2026US 2026/0261794 A1Qsc, LLC
- Handheld wireless outdoor speaker20 Aug 2026US 2026/0247064 A1Turtlebox Audio, L.L.C.
- Speaker system and electronic device13 Aug 2026US 2026/0238917 A1AAC Microtech (Changzhou) Co., Ltd.
- In-vehicle subwoofer23 Jul 2026US 2026/0214376 A1Guangzhou Oaktree Trading Co., Ltd.
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Bass reproduction speaker apparatus213US 5,588,065 AMasushita Electric Industrial Co., Ltd. · 1996
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Electroacoustical transducing with at least three cascaded subchambers84US 5,092,424 ABose Corporation · 1992
- Acoustic system76US 5,821,471 A1998