H04R 1/24
Structural combinations of separate transducers or of two parts of the same
Official title: Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
H04R1/24 (Structural combinations of separate transducers or of two parts of the same) appears on 1,121 US grants and 1,321 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,121
- Published applications
- 1,321
- Assignees
- 484
- Inventors
- 2,073
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 21 | 4 |
| 2002 | 6 | 5 |
| 2003 | 10 | 8 |
| 2004 | 7 | 10 |
| 2005 | 6 | 18 |
| 2006 | 3 | 20 |
| 2007 | 7 | 16 |
| 2008 | 4 | 14 |
| 2009 | 10 | 20 |
| 2010 | 3 | 15 |
| 2011 | 10 | 16 |
| 2012 | 31 | 33 |
| 2013 | 21 | 25 |
| 2014 | 22 | 40 |
| 2015 | 50 | 47 |
| 2016 | 46 | 54 |
| 2017 | 49 | 69 |
| 2018 | 52 | 69 |
| 2019 | 87 | 78 |
| 2020 | 81 | 87 |
| 2021 | 77 | 76 |
| 2022 | 74 | 95 |
| 2023 | 72 | 117 |
| 2024 | 112 | 153 |
| 2025 | 119 | 122 |
| 2026 | 67 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- TWS including planar speaker incorporating circuit-embedded vibrator, dynamic speaker, and microphone6 Oct 2026US 12,756,969 B2
- Electronic device6 Oct 2026US 12,756,971 B2Lenovo (Beijing) Limited
- Apparatus and method for generating control signals for a loudspeaker system with spectral interlacing in the lower frequency range15 Sep 2026US 12,739,591 B2Kaetel Systems GmbH
- Combined audio and haptic actuator assembly8 Sep 2026US 12,732,743 B2Google Inc.
- Acoustic signal output device18 Aug 2026US 12,713,168 B2NTT, Inc.
- Loudspeaker drive unit8 Oct 2026US 2026/0313287 A1Genelec Oy
- Full-bandwidth dual-sided speaker device8 Oct 2026US 2026/0313288 A1Merry Electronics (Suzhou) Co., Ltd.
- Full-bandwidth dual-sided speaker device1 Oct 2026US 2026/0304025 A1Merry Electronics (Suzhou) Co., Ltd.
- Full-bandwidth dual-sided speaker device1 Oct 2026US 2026/0304026 A1Merry Electronics (Suzhou) Co., Ltd.
- Acoustic output devices24 Sep 2026US 2026/0292396 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents
- Electroacoustical transducing with low frequency augmenting devices304US 8,238,578 B2Bose Corporation · 2012
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Acoustic optimization170US 8,965,033 B2Sonos, Inc. · 2015
- Electro-dynamic exciter112US 6,618,487 B1New Transducers Limited · 2003