H04R 2307/027
Diaphragms comprising metallic materials
H04R2307/027 (Diaphragms comprising metallic materials) appears on 188 US grants and 250 published applications in this corpus.
Search patents in H04R- Granted patents
- 188
- Published applications
- 250
- Assignees
- 146
- Inventors
- 473
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 5 |
| 2003 | 3 | 0 |
| 2004 | 2 | 3 |
| 2005 | 3 | 7 |
| 2006 | 2 | 8 |
| 2007 | 3 | 4 |
| 2008 | 2 | 3 |
| 2009 | 3 | 6 |
| 2010 | 2 | 4 |
| 2011 | 1 | 9 |
| 2012 | 4 | 5 |
| 2013 | 6 | 7 |
| 2014 | 7 | 12 |
| 2015 | 11 | 14 |
| 2016 | 12 | 14 |
| 2017 | 10 | 17 |
| 2018 | 14 | 16 |
| 2019 | 13 | 19 |
| 2020 | 20 | 24 |
| 2021 | 16 | 7 |
| 2022 | 10 | 14 |
| 2023 | 14 | 12 |
| 2024 | 8 | 18 |
| 2025 | 3 | 9 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ultrasonic transducer and parametric speaker including the same22 Sep 2026US 12,745,046 B2Murata Manufacturing Co., Ltd.
- Multilayered electrostatic transducer11 Aug 2026US 12,707,206 B2Warwick Acoustics Limited
- Ultrasonic transducer and parametric speaker including the same9 Jun 2026US 12,652,499 B2Murata Manufacturing Co., Ltd.
- Pressure wave generating element and method for producing the same26 May 2026US 12,641,376 B2Murata Manufacturing Co., Ltd.
- Speakers and methods19 May 2026US 12,634,632 B2Technische Universität Dresden, Korperschaft des offentlichen Rechts
- Electoacoustic transducer17 Sep 2026US 2026/0281623 A1
- Oblong miniature receiver for hearing devices27 Aug 2026US 2026/0255106 A1Sonion Nederland B. V.
- Electrodynamic loudspeaker with micro-electromechanical system30 Jul 2026US 2026/0222742 A1Zhejiang Normal University
- Sound generation apparatus and electronic device11 Jun 2026US 2026/0164185 A1Huawei Technologies Co., Ltd.
- Loudspeaker comprising a micro-electromechanical unit21 May 2026US 2026/0138863 A1Epinovatech AB
Most cited
By later US patents
- Hearing aid with large diaphragm microphone element including a printed circuit board44US 7,221,768 B2Sarnoff Corporation · 2007
- Speaker motor and speaker28US 8,175,321 B2Samson Technologies Corp. · 2012
- Low cost broad range loudspeaker and system27US 6,654,476 B12003
- Loud speaker, diaphragm and process for making the diaphragm20US 6,757,404 B2Matsushita Electric Industrial Co., Ltd. · 2004
- Microphone assembly for hearing aid with JFET flip-chip buffer18US 6,366,678 B1Sarnoff Corporation · 2002