H04R 7/08
Comprising superposed layers separated by air or other fluid
Official title: comprising superposed layers separated by air or other fluid
H04R7/08 (Comprising superposed layers separated by air or other fluid) appears on 131 US grants and 119 published applications in this corpus.
Search patents in H04R- Granted patents
- 131
- Published applications
- 119
- Assignees
- 68
- Inventors
- 240
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 15 | 4 |
| 2002 | 4 | 6 |
| 2003 | 6 | 1 |
| 2004 | 5 | 0 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 5 |
| 2015 | 5 | 6 |
| 2016 | 8 | 10 |
| 2017 | 4 | 2 |
| 2018 | 3 | 4 |
| 2019 | 7 | 13 |
| 2020 | 4 | 13 |
| 2021 | 14 | 9 |
| 2022 | 11 | 9 |
| 2023 | 7 | 9 |
| 2024 | 6 | 11 |
| 2025 | 7 | 5 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Micro-electro-mechanical system device1 Sep 2026US 12,722,968 B2Vanguard International Semiconductor Corporation
- Multilayered electrostatic transducer11 Aug 2026US 12,707,206 B2Warwick Acoustics Limited
- Sound transducer unit2 Jun 2026US 12,647,731 B2USound GmbH
- Motor assembly for speaker device19 May 2026US 12,634,630 B2Systematic Audio, LLC
- Speaker module12 May 2026US 12,627,922 B2Acer Incorporated
- Sound device24 Sep 2026US 2026/0292405 A1LG Electronics Inc.
- Mems acoustic sensing chip, microphone and electronic device6 Aug 2026US 2026/0230758 A1Weifang Goertek Microelectronics Co., Ltd.
- Electrodynamic loudspeaker with micro-electromechanical system30 Jul 2026US 2026/0222742 A1Zhejiang Normal University
- Membrane support for dual backplate transducers11 Jun 2026US 2026/0159379 A1Infineon Technologies AG
- Mems loudspeaker29 Jan 2026US 2026/0032391 A1Aac Kaitai Technologies (Wuhan) Co., Ltd
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Loudspeakers comprising panel-form acoustic radiating elements84US 6,144,746 ANew Transducers Limited · 2000
- Panel-form loudspeakers75US 6,198,831 B1New Transducers Limited · 2001
- Ceiling tile loudspeaker68US 6,215,881 B1New Transducers Limited · 2001