H04R 1/36
By using a single aperture of dimensions not greater than the shortest
Official title: by using a single aperture of dimensions not greater than the shortest operating wavelength
H04R1/36 (By using a single aperture of dimensions not greater than the shortest) appears on 24 US grants and 29 published applications in this corpus.
Search patents in H04R- Granted patents
- 24
- Published applications
- 29
- Assignees
- 18
- Inventors
- 54
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 3 |
| 2019 | 3 | 2 |
| 2020 | 4 | 4 |
| 2021 | 1 | 3 |
| 2022 | 3 | 2 |
| 2023 | 3 | 3 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 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 transducer32US 4,597,099 A1986
- Acoustic radiation pattern adjusting11US 8,290,195 B2Bose Corporation · 2012
- Playback devices having waveguides8US 10,397,694 B1Sonos, Inc. · 2019
- Transducer structure7US 4,155,066 AAmerican District Telegraph Company · 1979
- Magnetic membrane suspension5US 7,940,953 B2Harman Becker Automotive Systems GmbH · 2011