H04R 2307/023
Diaphragms comprising ceramic-like materials
Official title: Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
H04R2307/023 (Diaphragms comprising ceramic-like materials) appears on 237 US grants and 296 published applications in this corpus.
Search patents in H04R- Granted patents
- 237
- Published applications
- 296
- Assignees
- 136
- Inventors
- 512
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 4 |
| 2003 | 5 | 4 |
| 2004 | 5 | 6 |
| 2005 | 4 | 3 |
| 2006 | 3 | 5 |
| 2007 | 1 | 6 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 4 | 8 |
| 2012 | 4 | 5 |
| 2013 | 6 | 6 |
| 2014 | 9 | 15 |
| 2015 | 10 | 13 |
| 2016 | 9 | 21 |
| 2017 | 19 | 18 |
| 2018 | 12 | 23 |
| 2019 | 19 | 12 |
| 2020 | 14 | 19 |
| 2021 | 17 | 16 |
| 2022 | 17 | 19 |
| 2023 | 13 | 13 |
| 2024 | 21 | 35 |
| 2025 | 11 | 22 |
| 2026 | 17 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Non-planar diamond body for a speaker dome15 Sep 2026US 12,739,582 B2Element Six Technologies Limited
- Acoustical transducer composite glass panel1 Sep 2026US 12,726,767 B2GM Global Technology Operations LLC
- Selective hydrophobic layer removal using UV irradiation with non-aligned mask25 Aug 2026US 12,715,758 B2InvenSense, Inc.
- Diaphragm for miniature sound-generating device, and miniature sound-generating device25 Aug 2026US 12,720,262 B2Goertek Inc.
- Vibration apparatus and apparatus including the same25 Aug 2026US 12,720,263 B2LG Display Co., Ltd.
- Open earphones24 Sep 2026US 2026/0292393 A1Shenzhen Shokz Co., Ltd.
- Electrodynamic mems loudspeaker13 Aug 2026US 2026/0238924 A1Zhejiang Normal University
- Single surface directional sound system having multiple glass speakers11 Jun 2026US 2026/0164173 A1GM Global Technology Operations LLC
- Open earphones4 Jun 2026US 2026/0156396 A1Shenzhen Shokz Co., Ltd.
- Loudspeaker comprising a micro-electromechanical unit21 May 2026US 2026/0138863 A1Epinovatech AB
Most cited
By later US patents
- Process for forming a crystalline diamond film50US 4,987,002 AKabushiki Kaisha Kenwood · 1991
- Organic light emitting display device including a sound generating apparatus46US 9,818,805 B2LG Display Co., Ltd. · 2017
- Piezoelectric electroacoustic transducer and manufacturing method of the same39US 6,570,299 B2Murata Manufacturing Co., Ltd. · 2003
- MEMS acoustic transducer, MEMS microphone, MEMS microspeaker, array of speakers and method for manufacturing an acoustic transducer24US 9,516,428 B2Infineon Technologies AG · 2016
- Panel vibration type sound generating display device22US 10,129,646 B2LG Display Co., Ltd. · 2018