H04R 7/125
Comprising a plurality of superposed layers in contact
Official title: {comprising a plurality of superposed layers in contact}
H04R7/125 (Comprising a plurality of superposed layers in contact) appears on 188 US grants and 207 published applications in this corpus.
Search patents in H04R- Granted patents
- 188
- Published applications
- 207
- Assignees
- 121
- Inventors
- 420
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 6 |
| 2003 | 3 | 1 |
| 2004 | 2 | 5 |
| 2005 | 1 | 6 |
| 2006 | 4 | 11 |
| 2007 | 1 | 6 |
| 2008 | 5 | 2 |
| 2009 | 4 | 6 |
| 2010 | 6 | 4 |
| 2011 | 2 | 4 |
| 2012 | 3 | 3 |
| 2013 | 4 | 4 |
| 2014 | 7 | 12 |
| 2015 | 5 | 9 |
| 2016 | 5 | 19 |
| 2017 | 21 | 8 |
| 2018 | 8 | 15 |
| 2019 | 10 | 15 |
| 2020 | 16 | 17 |
| 2021 | 6 | 11 |
| 2022 | 13 | 12 |
| 2023 | 12 | 13 |
| 2024 | 6 | 6 |
| 2025 | 10 | 7 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diaphragm for miniature sound-generating device, and miniature sound-generating device25 Aug 2026US 12,720,262 B2Goertek Inc.
- Speaker19 May 2026US 12,634,631 B2AAC Microtech (Changzhou) Co., Ltd.
- Speakers and methods19 May 2026US 12,634,632 B2Technische Universität Dresden, Korperschaft des offentlichen Rechts
- Electronic devices having optical and audio components10 Feb 2026US 12,549,214 B2
- Piezoelectric MEMS acoustic sensor13 Jan 2026US 12,523,560 B2United Microelectronics Center Co., Ltd
- Diaphragm for microspeaker and related processes23 Jul 2026US 2026/0214388 A13M Innovative Properties Company
- Speaker16 Jul 2026US 2026/0205738 A1Merry Electronics (Suzhou) Co., Ltd.
- Speaker Structure25 Jun 2026US 2026/0181310 A1Aac Kaitai Technologies (Wuhan) Co., Ltd
- Speaker Diaphragm and Speaker4 Jun 2026US 2026/0156416 A1Yamaha Corporation
- Loudspeaker cone with raised curved protrusions and method for controlling resonant modes12 Feb 2026US 2026/0046565 A1Polk Audio, LLC
Most cited
By later US patents
- Electro-acoustic transducer45US 4,410,768 ANippon Gakki Seizo Kabushiki Kaisha · 1983
- Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same37US 5,744,761 AMatsushita Electric Industrial Co., Ltd. · 1998
- Low cost broad range loudspeaker and system27US 6,654,476 B12003
- Acoustic assembly for a transducer23US 7,860,264 B2Knowles Electronics, LLC · 2010
- Speaker diaphragm and method of preparation of the same22US 4,291,781 AMatsushita Electric Industrial Co., Ltd. · 1981