H04R 1/2819
For loudspeaker transducers
Official title: {for loudspeaker transducers}
H04R1/2819 (For loudspeaker transducers) appears on 412 US grants and 392 published applications in this corpus.
Search patents in H04R- Granted patents
- 412
- Published applications
- 392
- Assignees
- 222
- Inventors
- 871
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 3 |
| 2002 | 5 | 3 |
| 2003 | 3 | 3 |
| 2004 | 3 | 14 |
| 2005 | 5 | 8 |
| 2006 | 3 | 7 |
| 2007 | 6 | 13 |
| 2008 | 4 | 11 |
| 2009 | 5 | 17 |
| 2010 | 6 | 10 |
| 2011 | 8 | 13 |
| 2012 | 17 | 15 |
| 2013 | 14 | 10 |
| 2014 | 13 | 10 |
| 2015 | 5 | 18 |
| 2016 | 18 | 18 |
| 2017 | 24 | 32 |
| 2018 | 24 | 19 |
| 2019 | 24 | 26 |
| 2020 | 16 | 25 |
| 2021 | 19 | 22 |
| 2022 | 26 | 29 |
| 2023 | 17 | 20 |
| 2024 | 24 | 22 |
| 2025 | 19 | 12 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Passive radiator with adjustable working frequency12 May 2026US 12,627,921 B2Glass Acoustic Innovations Co., Ltd.
- High-precision alignment features for audio transducers21 Apr 2026US 12,610,189 B2Sonos, Inc.
- Method of manufacturing an organic light-emitting display device including forming the pixel definer by melting the pixel definer material layer patterned on the pixel electrode pattern14 Apr 2026US 12,604,627 B2Samsung Display Co., Ltd.
- Acoustic apparatus7 Apr 2026US 12,598,408 B2Alps Alpine Co., Ltd.
- Core, speaker module, and electronic device31 Mar 2026US 12,593,177 B2Beijing Honor Device Co., Ltd.
- Speaker device30 Jul 2026US 2026/0222734 A1Panasonic Intellectual Property Management Co., Ltd.
- In-vehicle subwoofer23 Jul 2026US 2026/0214376 A1Guangzhou Oaktree Trading Co., Ltd.
- Loudspeaker including dual speaker drivers with conjoined pair of acoustic transmission lines, and vehicle structure having the loudspeaker therein2 Jul 2026US 2026/0189847 A1Harman International Industries, Incorporated
- Method, device, and system for generating a corrected audio signal18 Jun 2026US 2026/0172751 A1Y.E. Hub Armenia LLC
- Earphones11 Jun 2026US 2026/0164166 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents