H04R 2307/204
Material aspects of the outer suspension of loudspeaker diaphragms
H04R2307/204 (Material aspects of the outer suspension of loudspeaker diaphragms) appears on 122 US grants and 140 published applications in this corpus.
Search patents in H04R- Granted patents
- 122
- Published applications
- 140
- Assignees
- 78
- Inventors
- 269
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 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 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 3 |
| 2004 | 1 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 1 |
| 2009 | 3 | 4 |
| 2010 | 2 | 2 |
| 2011 | 3 | 4 |
| 2012 | 3 | 5 |
| 2013 | 3 | 2 |
| 2014 | 4 | 4 |
| 2015 | 5 | 10 |
| 2016 | 5 | 7 |
| 2017 | 13 | 20 |
| 2018 | 9 | 8 |
| 2019 | 14 | 9 |
| 2020 | 8 | 10 |
| 2021 | 6 | 7 |
| 2022 | 7 | 6 |
| 2023 | 3 | 6 |
| 2024 | 5 | 9 |
| 2025 | 8 | 4 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-cone speaker28 Apr 2026US 12,615,478 B2Suzhou Sonavox Electronics Co., Ltd.
- Loudspeaker17 Mar 2026US 12,581,241 B2Panasonic Automotive Systems Co., Ltd.
- Loudspeaker assembly10 Mar 2026US 12,574,686 B2Pss Belgium NV
- Speaker17 Feb 2026US 12,556,868 B2AAC Microtech (Changzhou) Co., Ltd.
- Electronic devices having optical and audio components10 Feb 2026US 12,549,214 B2
- Bumper for speaker assembly2 Jul 2026US 2026/0189828 A1Harman International Industries, Incorporated
- Planar transducer and speaker1 Jan 2026US 2026/0006383 A1Shenzhen Xinqi Science and Technology Co., Ltd.
- Speaker4 Dec 2025US 2025/0373983 A1Pss Belgium NV
- Speaker assembly21 Aug 2025US 2025/0267407 A1Apple Inc.
- Acoustic Driver with Liquid Silicone Rubber (LSR) Surround24 Apr 2025US 2025/0133317 A1
Most cited
By later US patents
- Ultra low frequency transducer and loud speaker comprising same205US 6,611,604 B1Stillwater Designs and Audio, Inc. · 2003
- Temperature/environment-resistant transducer suspension43US 5,455,396 AFord Motor Company · 1995
- Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same37US 5,744,761 AMatsushita Electric Industrial Co., Ltd. · 1998
- Speaker suspension26US 9,137,592 B2Nokia Technologies Oy · 2015
- Ultra low frequency transducer and loud speaker comprising same23US 7,916,890 B2Stillwater Designs and Audio, Inc. · 2011