H04R 1/2849
For loudspeaker transducers
Official title: {for loudspeaker transducers}
H04R1/2849 (For loudspeaker transducers) appears on 240 US grants and 300 published applications in this corpus.
Search patents in H04R- Granted patents
- 240
- Published applications
- 300
- Assignees
- 104
- Inventors
- 460
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 1 |
| 2004 | 3 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 7 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 3 |
| 2013 | 3 | 6 |
| 2014 | 5 | 4 |
| 2015 | 5 | 8 |
| 2016 | 5 | 11 |
| 2017 | 11 | 17 |
| 2018 | 17 | 16 |
| 2019 | 18 | 12 |
| 2020 | 11 | 18 |
| 2021 | 18 | 30 |
| 2022 | 24 | 23 |
| 2023 | 20 | 32 |
| 2024 | 25 | 37 |
| 2025 | 39 | 21 |
| 2026 | 13 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for suppressing sound leakage8 Sep 2026US 12,732,760 B2Shenzhen Shokz Co., Ltd.
- Earphone and earphone assembly18 Aug 2026US 12,713,175 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Systems and methods for suppressing sound leakage14 Jul 2026US 12,684,300 B2Shenzhen Shokz Co., Ltd.
- Open earphones16 Jun 2026US 12,659,651 B2Shenzhen Shokz Co., Ltd.
- Acoustic output device2 Jun 2026US 12,647,723 B2Shenzhen Shokz Co., Ltd.
- Valved Port24 Sep 2026US 2026/0292394 A1Apple Inc.
- Open-Ear Headphone with Energy-Directing Nozzle20 Aug 2026US 2026/0247066 A1
- Acoustic output devices13 Aug 2026US 2026/0238908 A1Shenzhen Shokz Co., Ltd.
- Speaker assemblies and earphones13 Aug 2026US 2026/0238919 A1Shenzhen Shokz Co., Ltd.
- Mems acoustic sensing chip, microphone and electronic device6 Aug 2026US 2026/0230758 A1Weifang Goertek Microelectronics Co., Ltd.
Most cited
By later US patents
- Electroacoustical transducing with at least three cascaded subchambers84US 5,092,424 ABose Corporation · 1992
- In-ear headphones64US 7,916,888 B2Bose Corporation · 2011
- Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters59US 6,389,146 B1American Technology Corporation · 2002
- Speaker configuration for a portable electronic device59US 6,785,395 B1Motorola, Inc. · 2004
- Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube56US 5,261,006 AU. S. Philips Corporation · 1993