H04R 7/00
Diaphragms for electromechanical transducers
Official title: Diaphragms for electromechanical transducers (in general F16J3/00); Cones (for musical instruments G10 ){(cones, diaphragms or the like, for emitting or receiving sound in general G10K13/00; Mounting thereof)}
H04R7/00 (Diaphragms for electromechanical transducers) appears on 4,376 US grants and 5,072 published applications in this corpus.
Search patents in H04R- Granted patents
- 4,376
- Published applications
- 5,072
- Assignees
- 1,129
- Inventors
- 6,149
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 17 | 0 |
| 1978 | 17 | 0 |
| 1979 | 12 | 0 |
| 1980 | 15 | 0 |
| 1981 | 16 | 0 |
| 1982 | 22 | 0 |
| 1983 | 20 | 0 |
| 1984 | 20 | 0 |
| 1985 | 15 | 0 |
| 1986 | 14 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 19 | 0 |
| 1990 | 13 | 0 |
| 1991 | 17 | 0 |
| 1992 | 18 | 0 |
| 1993 | 13 | 0 |
| 1994 | 14 | 0 |
| 1995 | 13 | 0 |
| 1996 | 8 | 0 |
| 1997 | 16 | 0 |
| 1998 | 21 | 0 |
| 1999 | 22 | 0 |
| 2000 | 23 | 0 |
| 2001 | 49 | 33 |
| 2002 | 42 | 71 |
| 2003 | 52 | 57 |
| 2004 | 48 | 80 |
| 2005 | 38 | 82 |
| 2006 | 46 | 107 |
| 2007 | 50 | 94 |
| 2008 | 42 | 71 |
| 2009 | 50 | 78 |
| 2010 | 48 | 78 |
| 2011 | 62 | 88 |
| 2012 | 87 | 83 |
| 2013 | 76 | 91 |
| 2014 | 78 | 130 |
| 2015 | 130 | 220 |
| 2016 | 169 | 230 |
| 2017 | 206 | 250 |
| 2018 | 228 | 310 |
| 2019 | 293 | 307 |
| 2020 | 313 | 462 |
| 2021 | 343 | 317 |
| 2022 | 279 | 375 |
| 2023 | 295 | 433 |
| 2024 | 372 | 451 |
| 2025 | 358 | 323 |
| 2026 | 227 | 251 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multicoil balanced armature receiver6 Oct 2026US 12,756,975 B2Knowles Electronics, LLC
- Balanced offset force cancellation using bass and full range transducers6 Oct 2026US 12,756,980 B2Apple Inc.
- Sound device6 Oct 2026US 12,756,981 B2AAC Microtech (Changzhou) Co., Ltd.
- Loudspeaker and loudspeaker manufacturing method29 Sep 2026US 12,750,614 B2Panasonic Automotive Systems Co., Ltd.
- Micro speaker structure including diaphragm with locally thinner regions and method for forming the same22 Sep 2026US 12,745,043 B2Fortemedia, Inc.
- Loudspeaker drive unit8 Oct 2026US 2026/0313287 A1Genelec Oy
- Full-bandwidth dual-sided speaker device8 Oct 2026US 2026/0313288 A1Merry Electronics (Suzhou) Co., Ltd.
- Loudspeaker with phase plug8 Oct 2026US 2026/0313292 A1Ask Industries Societa' Per Azioni
- Devices, systems and methods relating to audio transducers and audio devices8 Oct 2026US 2026/0313296 A1Wing Acoustics Limited
- Thin balanced armature receiver8 Oct 2026US 2026/0313297 A1Knowles Electronics, LLC
Most cited
By later US patents
- Multimedia personal computer with active noise reduction and piezo speakers298US 5,828,768 ANoise Cancellation Technologies, Inc. · 1998
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Miniature silicon condenser microphone268US 5,870,482 AKnowles Electronics, LLC · 1999
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Ultra low frequency transducer and loud speaker comprising same205US 6,611,604 B1Stillwater Designs and Audio, Inc. · 2003