H04R 1/2857
For loudspeaker transducers
Official title: {for loudspeaker transducers}
H04R1/2857 (For loudspeaker transducers) appears on 447 US grants and 480 published applications in this corpus.
Search patents in H04R- Granted patents
- 447
- Published applications
- 480
- Assignees
- 171
- Inventors
- 801
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 4 |
| 2005 | 1 | 8 |
| 2006 | 1 | 1 |
| 2007 | 3 | 8 |
| 2008 | 1 | 9 |
| 2009 | 4 | 10 |
| 2010 | 5 | 14 |
| 2011 | 7 | 6 |
| 2012 | 15 | 9 |
| 2013 | 9 | 10 |
| 2014 | 8 | 6 |
| 2015 | 10 | 14 |
| 2016 | 16 | 18 |
| 2017 | 23 | 47 |
| 2018 | 41 | 35 |
| 2019 | 43 | 43 |
| 2020 | 41 | 30 |
| 2021 | 30 | 48 |
| 2022 | 29 | 29 |
| 2023 | 35 | 47 |
| 2024 | 36 | 29 |
| 2025 | 26 | 18 |
| 2026 | 13 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic device6 Oct 2026US 12,756,971 B2Lenovo (Beijing) Limited
- Apparatus15 Sep 2026US 12,739,565 B2LG Display Co., Ltd.
- Omni directional unified communications system tabletop audio device using two or more loudspeakers25 Aug 2026US 12,720,255 B2Crestron Electronics, Inc.
- Acoustic output device and components thereof4 Aug 2026US 12,701,349 B2Shenzhen Shokz Co., Ltd.
- Miniature loudspeaker30 Jun 2026US 12,671,937 B2Merry Electronics (Suzhou) Co., Ltd.
- Electronic device comprising waveguide for speaker27 Aug 2026US 2026/0255101 A1Korea Advanced Institute of Science and Technology
- Audio speaker system30 Jul 2026US 2026/0222718 A1Merry Electronics North America Inc., Doing Business AS Sonavox Mena
- Resonator devices and assemblies thereof30 Jul 2026US 2026/0222729 A1SimpliSafe, Inc.
- Speaker device30 Jul 2026US 2026/0222734 A1Panasonic Intellectual Property Management Co., Ltd.
- Sound production unit and audio device23 Jul 2026US 2026/0214390 A1Caldron Technologies Pte. Ltd.
Most cited
By later US patents
- Electroacoustical transducing with low frequency augmenting devices304US 8,238,578 B2Bose Corporation · 2012
- Open-air type earphone201US 4,742,887 ASony Corporation · 1988
- Wireless pairing of earbuds and case96US 9,769,558 B2Apple Inc. · 2017
- Pressure wave transducing87US 4,628,528 ABose Corporation · 1986
- Portable audio system with docking cradle85US 7,689,197 B2Bose Corporation · 2010