H04R 23/00
Transducers other than those covered by groups h04r9/00 - h04r21/00
Official title: Transducers other than those covered by groups H04R9/00 - H04R21/00 {(diaphragms for transducers of the distributed-mode type H04R7/045)}
H04R23/00 (Transducers other than those covered by groups h04r9/00 - h04r21/00) appears on 983 US grants and 946 published applications in this corpus.
Search patents in H04R- Granted patents
- 983
- Published applications
- 946
- Assignees
- 439
- Inventors
- 1,628
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 15 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 3 |
| 2002 | 16 | 24 |
| 2003 | 9 | 18 |
| 2004 | 14 | 22 |
| 2005 | 15 | 25 |
| 2006 | 12 | 24 |
| 2007 | 13 | 26 |
| 2008 | 18 | 14 |
| 2009 | 19 | 31 |
| 2010 | 11 | 38 |
| 2011 | 31 | 32 |
| 2012 | 37 | 42 |
| 2013 | 26 | 28 |
| 2014 | 51 | 56 |
| 2015 | 49 | 64 |
| 2016 | 64 | 63 |
| 2017 | 72 | 59 |
| 2018 | 67 | 67 |
| 2019 | 49 | 47 |
| 2020 | 50 | 50 |
| 2021 | 35 | 26 |
| 2022 | 39 | 54 |
| 2023 | 34 | 57 |
| 2024 | 34 | 34 |
| 2025 | 36 | 21 |
| 2026 | 28 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04R 23/008Transducers other than those covered by groups h04r9/00 - h04r21/00: using optical380
- H04R 23/002Transducers other than those covered by groups h04r9/00 - h04r21/00: using electrothermic-effect137
- H04R 23/02Transducers using more than one principle simultaneously122
- H04R 23/006Transducers other than those covered by groups h04r9/00 - h04r21/00: using solid72
- H04R 23/004Transducers other than those covered by groups h04r9/00 - h04r21/00: using ionised27
Recent patents
- Event recognition apparatus, event recognition method, and non-transitory computer-readable medium8 Sep 2026US 12,730,000 B2NEC Corporation
- Acoustic output devices8 Sep 2026US 12,732,744 B2Shenzhen Shokz Co., Ltd.
- Pressure wave generating element8 Sep 2026US 12,732,758 B2Murata Manufacturing Co., Ltd.
- Optical displacement sensor18 Aug 2026US 12,710,264 B2Sensibel AS
- Vibration apparatus and apparatus including the same7 Jul 2026US 12,677,101 B2LG Display Co., Ltd.
- Acoustic output devices24 Sep 2026US 2026/0292391 A1Shenzhen Shokz Co., Ltd.
- Acoustic output devices24 Sep 2026US 2026/0292392 A1Shenzhen Shokz Co., Ltd.
- Silent Speech and Ear-Mountable Devices10 Sep 2026US 2026/0268920 A1
- Strain-insensitive stretchable thermoacoustic loudspeaker and method for manufacturing the same20 Aug 2026US 2026/0247081 A1UIF (University Industry Foundation), Yonsei University
- Acoustic feature computing apparatus, acoustic feature computing method, and program30 Jul 2026US 2026/0219100 A1NTT, Inc.
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Electroactive polymer electrodes1,515US 6,583,533 B2SRI International · 2003
- Receiver communications for wireless power transfer291US 9,001,622 B2uBeam Inc. · 2015
- Electroactive polymer electrodes248US 6,376,971 B1SRI International · 2002
- Microphone having linear optical transducers221US 6,154,551 A2000