H04R 9/00
Transducers of moving-coil, moving-strip, or moving-wire type
H04R9/00 (Transducers of moving-coil, moving-strip, or moving-wire type) appears on 4,989 US grants and 5,473 published applications in this corpus.
Search patents in H04R- Granted patents
- 4,989
- Published applications
- 5,473
- Assignees
- 1,230
- Inventors
- 6,001
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 23 | 0 |
| 1978 | 13 | 0 |
| 1979 | 19 | 0 |
| 1980 | 28 | 0 |
| 1981 | 30 | 0 |
| 1982 | 29 | 0 |
| 1983 | 28 | 0 |
| 1984 | 26 | 0 |
| 1985 | 34 | 0 |
| 1986 | 22 | 0 |
| 1987 | 12 | 0 |
| 1988 | 14 | 0 |
| 1989 | 21 | 0 |
| 1990 | 18 | 0 |
| 1991 | 17 | 0 |
| 1992 | 22 | 0 |
| 1993 | 21 | 0 |
| 1994 | 20 | 0 |
| 1995 | 22 | 0 |
| 1996 | 19 | 0 |
| 1997 | 28 | 0 |
| 1998 | 45 | 0 |
| 1999 | 33 | 0 |
| 2000 | 33 | 0 |
| 2001 | 58 | 23 |
| 2002 | 46 | 100 |
| 2003 | 74 | 67 |
| 2004 | 77 | 135 |
| 2005 | 55 | 127 |
| 2006 | 75 | 154 |
| 2007 | 70 | 144 |
| 2008 | 74 | 88 |
| 2009 | 54 | 114 |
| 2010 | 72 | 95 |
| 2011 | 99 | 127 |
| 2012 | 114 | 132 |
| 2013 | 109 | 113 |
| 2014 | 115 | 140 |
| 2015 | 144 | 178 |
| 2016 | 186 | 205 |
| 2017 | 197 | 281 |
| 2018 | 245 | 307 |
| 2019 | 304 | 306 |
| 2020 | 343 | 450 |
| 2021 | 327 | 404 |
| 2022 | 302 | 324 |
| 2023 | 294 | 375 |
| 2024 | 366 | 476 |
| 2025 | 349 | 341 |
| 2026 | 241 | 267 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- TWS including planar speaker incorporating circuit-embedded vibrator, dynamic speaker, and microphone6 Oct 2026US 12,756,969 B2
- 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.
- Sound apparatus and vehicular apparatus including the same22 Sep 2026US 12,745,027 B2LG Display Co., Ltd.
- Micro speaker structure including diaphragm with locally thinner regions and method for forming the same22 Sep 2026US 12,745,043 B2Fortemedia, Inc.
- Exterior communication system for mobility vehicle8 Oct 2026US 2026/0313278 A1Hyundai Motor Company
- 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
Most cited
By later US patents
- Electroacoustical transducing with low frequency augmenting devices304US 8,238,578 B2Bose Corporation · 2012
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Mechanical vibrating element238US 4,421,381 AYokogawa Hokushin Electric Corporation · 1983
- 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