H04R 31/003
Apparatus or processes specially adapted for the manufacture of transducers or diaphragms
Official title: {for diaphragms or their outer suspension}
H04R31/003 (Apparatus or processes specially adapted for the manufacture of transducers or diaphragms) appears on 852 US grants and 971 published applications in this corpus.
Search patents in H04R- Granted patents
- 852
- Published applications
- 971
- Assignees
- 366
- Inventors
- 1,670
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 4 |
| 2002 | 9 | 15 |
| 2003 | 12 | 10 |
| 2004 | 12 | 21 |
| 2005 | 6 | 19 |
| 2006 | 9 | 26 |
| 2007 | 8 | 20 |
| 2008 | 11 | 13 |
| 2009 | 16 | 15 |
| 2010 | 14 | 15 |
| 2011 | 16 | 24 |
| 2012 | 20 | 21 |
| 2013 | 19 | 16 |
| 2014 | 21 | 25 |
| 2015 | 17 | 42 |
| 2016 | 29 | 52 |
| 2017 | 56 | 69 |
| 2018 | 50 | 103 |
| 2019 | 86 | 74 |
| 2020 | 69 | 80 |
| 2021 | 61 | 61 |
| 2022 | 58 | 64 |
| 2023 | 55 | 57 |
| 2024 | 35 | 44 |
| 2025 | 40 | 46 |
| 2026 | 28 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Micro speaker structure including diaphragm with locally thinner regions and method for forming the same22 Sep 2026US 12,745,043 B2Fortemedia, Inc.
- Microphone device based on two-dimensional piezoelectric material layer having protective layer formed thereon, and method for fabricating the same22 Sep 2026US 12,745,045 B2Research & Business Foundation Sungkyunkwan University
- Non-planar diamond body for a speaker dome15 Sep 2026US 12,739,582 B2Element Six Technologies Limited
- Piezoelectric micromachined ultrasonic transducer (PMUT) design25 Aug 2026US 12,721,040 B2QUALCOMM Incorporated
- Transducer and method for manufacturing same18 Aug 2026US 12,713,184 B2Rohm Co., Ltd.
- Manufacturing a microphone by bonding layers1 Oct 2026US 2026/0296881 A1InvenSense, Inc.
- Electoacoustic transducer17 Sep 2026US 2026/0281623 A1
- Foundry-compatible process for integrated micro-speaker and microphone17 Sep 2026US 2026/0281642 A1Vibrant Microsystems Inc.
- Micromechanical component for a sensor device, microphone device and/or micro-loudspeaker device27 Aug 2026US 2026/0250121 A1
- Horn apparatuses and associated methods20 Aug 2026US 2026/0241860 A1Pss Belgium NV
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Method for forming a hard carbon thin film on article and applications thereof131US 4,725,345 AKabushiki Kaisha Kenwood · 1988
- High sensitivity micro-machined pressure sensors and acoustic transducers95US 6,012,335 ANational Semiconductor Corporation · 2000
- Method of forming parylene-diaphragm piezoelectric acoustic transducers56US 6,857,501 B1The United States of America as represented by the Secretary of the Navy · 2005