H04R 31/00
Apparatus or processes specially adapted for the manufacture of transducers or diaphragms
Official title: Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor {(manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182)}
H04R31/00 (Apparatus or processes specially adapted for the manufacture of transducers or diaphragms) appears on 2,727 US grants and 3,173 published applications in this corpus.
Search patents in H04R- Granted patents
- 2,727
- Published applications
- 3,173
- Assignees
- 865
- Inventors
- 4,642
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 11 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 10 |
| 2002 | 16 | 34 |
| 2003 | 17 | 33 |
| 2004 | 30 | 51 |
| 2005 | 21 | 61 |
| 2006 | 23 | 62 |
| 2007 | 45 | 75 |
| 2008 | 31 | 71 |
| 2009 | 35 | 93 |
| 2010 | 58 | 87 |
| 2011 | 60 | 108 |
| 2012 | 97 | 94 |
| 2013 | 97 | 141 |
| 2014 | 123 | 125 |
| 2015 | 129 | 199 |
| 2016 | 170 | 193 |
| 2017 | 186 | 209 |
| 2018 | 169 | 270 |
| 2019 | 240 | 193 |
| 2020 | 198 | 221 |
| 2021 | 166 | 190 |
| 2022 | 169 | 165 |
| 2023 | 173 | 163 |
| 2024 | 124 | 118 |
| 2025 | 107 | 127 |
| 2026 | 72 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Loudspeaker and loudspeaker manufacturing method29 Sep 2026US 12,750,614 B2Panasonic Automotive Systems Co., Ltd.
- 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
- Wire damper of loudspeaker with periodic span wires and the method for manufacturing the same15 Sep 2026US 12,739,568 B2
- Non-planar diamond body for a speaker dome15 Sep 2026US 12,739,582 B2Element Six Technologies Limited
- Earpiece for a wearable electronic device and method of manufacturing the same8 Oct 2026US 2026/0306008 A1T&W Engineering A/S
- Manufacturing a microphone by bonding layers1 Oct 2026US 2026/0296881 A1InvenSense, Inc.
- Ceramic speaker and manufacturing method therefor24 Sep 2026US 2026/0285766 A1Amosense Co., Ltd.
- Ceramic speaker24 Sep 2026US 2026/0293529 A1Amosense Co., Ltd.
- Acoustic transducer assembly with molded interconnect device (mid)17 Sep 2026US 2026/0276600 A1Evident Scientific, Inc.
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Microelectromechanical system package with environmental and interference shield293US 6,781,231 B2Knowles Electronics, LLC · 2004
- Miniature silicon condenser microphone268US 5,870,482 AKnowles Electronics, LLC · 1999
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Miniature silicon condenser microphone190US 7,166,910 B2Knowles Electronics, LLC · 2007