H04R 7/22
Clamping rim of diaphragm or cone against seating
H04R7/22 (Clamping rim of diaphragm or cone against seating) appears on 94 US grants and 106 published applications in this corpus.
Search patents in H04R- Granted patents
- 94
- Published applications
- 106
- Assignees
- 72
- Inventors
- 250
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 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 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 3 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 5 |
| 2007 | 3 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 5 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 2 | 0 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 5 | 7 |
| 2017 | 5 | 4 |
| 2018 | 5 | 7 |
| 2019 | 8 | 8 |
| 2020 | 6 | 12 |
| 2021 | 9 | 5 |
| 2022 | 5 | 9 |
| 2023 | 6 | 9 |
| 2024 | 6 | 10 |
| 2025 | 6 | 5 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Piezoelectric electroacoustic transducer42US 4,063,049 ASocieta Italiana Telecomunicazioni Siemens S.p.A. · 1977
- Loud speaker structure30US 5,748,759 ACarver Corporation · 1998
- Diaphragm support frames for acoustic transducers and method of assembly27US 5,850,461 ASonigistix Corporation · 1998
- Dynamic microphone21US 5,255,328 AKabushiki Kaisha Audio-Technica · 1993
- Pattern voice coil loudspeaker with baffles touching diaphragm20US 4,156,801 AStrathern Audio Limited · 1979