H04R 23/02
Transducers using more than one principle simultaneously
H04R23/02 (Transducers using more than one principle simultaneously) appears on 122 US grants and 136 published applications in this corpus.
Search patents in H04R- Granted patents
- 122
- Published applications
- 136
- Assignees
- 87
- Inventors
- 269
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 4 |
| 2016 | 3 | 7 |
| 2017 | 7 | 17 |
| 2018 | 16 | 26 |
| 2019 | 14 | 10 |
| 2020 | 12 | 18 |
| 2021 | 14 | 5 |
| 2022 | 10 | 3 |
| 2023 | 4 | 20 |
| 2024 | 3 | 4 |
| 2025 | 11 | 5 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acoustic output devices8 Sep 2026US 12,732,744 B2Shenzhen Shokz Co., Ltd.
- Hybrid sound radiation device for vibrating a heavy-weight rigid plate at audio frequencies30 Jun 2026US 12,671,947 B2Sensonic Design Ireland Limited
- Sound capturing method, microphone, and electronic device19 May 2026US 12,634,637 B2Huawei Technologies Co., Ltd.
- Loudspeaker apparatus, loudspeaker system, display panel and systems thereof24 Mar 2026US 12,587,777 B2Full Stack Acoustic Limited
- Speaker24 Feb 2026US 12,563,349 B2Merry Electronics (Suzhou) Co., Ltd.
- Acoustic output devices24 Sep 2026US 2026/0292391 A1Shenzhen Shokz Co., Ltd.
- Acoustic output devices24 Sep 2026US 2026/0292392 A1Shenzhen Shokz Co., Ltd.
- Recessed lighting system with heat conducting casting2 Jul 2026US 2026/0185669 A1DMF, Inc.
- Acoustic devices12 Mar 2026US 2026/0075356 A1Shenzhen Shokz Co., Ltd.
- Acoustic output devices5 Mar 2026US 2026/0067609 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents
- Unified driver and light source assembly for recessed lighting111US 9,964,266 B2DMF, Inc. · 2018
- Recessed lighting systems73US 10,408,395 B2DMF, Inc. · 2019
- Polymeric piezoelectric transducer with thermoformed protuberances71US 4,284,921 AThomson-CSF · 1981
- Paper structures for speaker transducers69US 6,393,129 B1American Technology Corporation · 2002
- Recessed lighting systems63US 10,816,148 B2DMF, Inc. · 2020