H04R 1/30
Combinations of transducers with horns
Official title: Combinations of transducers with horns, e.g. with mechanical matching means {, i.e. front-loaded horns}(horns in general G10K; {transducer enclosures or mountings using a back-loaded horn H04R1/2861; application of horns as guiding means to obtain a predetermined directivity characteristic H04R1/345})
H04R1/30 (Combinations of transducers with horns) appears on 498 US grants and 426 published applications in this corpus.
Search patents in H04R- Granted patents
- 498
- Published applications
- 426
- Assignees
- 220
- Inventors
- 791
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 7 | 10 |
| 2003 | 6 | 9 |
| 2004 | 5 | 9 |
| 2005 | 4 | 7 |
| 2006 | 6 | 8 |
| 2007 | 8 | 7 |
| 2008 | 5 | 6 |
| 2009 | 6 | 12 |
| 2010 | 8 | 8 |
| 2011 | 7 | 14 |
| 2012 | 17 | 14 |
| 2013 | 12 | 16 |
| 2014 | 15 | 19 |
| 2015 | 26 | 17 |
| 2016 | 13 | 20 |
| 2017 | 22 | 25 |
| 2018 | 25 | 43 |
| 2019 | 39 | 26 |
| 2020 | 26 | 24 |
| 2021 | 18 | 16 |
| 2022 | 27 | 26 |
| 2023 | 19 | 22 |
| 2024 | 28 | 28 |
| 2025 | 22 | 16 |
| 2026 | 10 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Constant coverage horn11 Aug 2026US 12,707,192 B2Bianmp Systems, LLC
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- Vehicle horn24 Sep 2026US 2026/0285432 A1Indian Motorcycle International, LLC
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- Sound signal output system and sound signal output method20 Aug 2026US 2026/0247069 A1NTT, Inc.
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- Speaker device30 Jul 2026US 2026/0222734 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- Multiple-driver single horn loud speaker88US 5,526,456 ARenku-Heinz, Inc. · 1996
- Acoustic system76US 5,821,471 A1998
- High output loudspeaker system58US 4,923,031 AElectro-Voice, Incorporated · 1990
- Sound reproduction employing unity summation aperture loudspeakers58US 6,411,718 B1Sound Physics Labs, Inc. · 2002
- Axially propagating mid and high frequency loudspeaker systems57US 6,343,133 B12002