H04R 1/021
Incorporating only one transducer
Official title: {incorporating only one transducer}
H04R1/021 (Incorporating only one transducer) appears on 648 US grants and 724 published applications in this corpus.
Search patents in H04R- Granted patents
- 648
- Published applications
- 724
- Assignees
- 309
- Inventors
- 1,431
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 14 | 2 |
| 2002 | 8 | 5 |
| 2003 | 6 | 2 |
| 2004 | 4 | 2 |
| 2005 | 1 | 4 |
| 2006 | 1 | 10 |
| 2007 | 5 | 10 |
| 2008 | 3 | 12 |
| 2009 | 5 | 12 |
| 2010 | 7 | 15 |
| 2011 | 6 | 20 |
| 2012 | 17 | 9 |
| 2013 | 20 | 29 |
| 2014 | 13 | 37 |
| 2015 | 20 | 35 |
| 2016 | 26 | 32 |
| 2017 | 36 | 31 |
| 2018 | 36 | 40 |
| 2019 | 43 | 59 |
| 2020 | 54 | 68 |
| 2021 | 51 | 52 |
| 2022 | 42 | 49 |
| 2023 | 46 | 61 |
| 2024 | 44 | 63 |
| 2025 | 48 | 36 |
| 2026 | 30 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multicoil balanced armature receiver6 Oct 2026US 12,756,975 B2Knowles Electronics, LLC
- Apparatuses and methods for deactivating speakers of wireless tracking devices29 Sep 2026US 12,749,471 B1Elevation Lab, Inc.
- Housing of sound generating device, sound generating device and electronic apparatus thereof25 Aug 2026US 12,720,242 B2Goertek Inc.
- Speaker module and electronic device11 Aug 2026US 12,707,191 B2Honor Device Co., Ltd.
- Electronic device11 Aug 2026US 12,707,205 B2Merry Electronics (Suzhou) Co., Ltd.
- Open earphones24 Sep 2026US 2026/0292393 A1Shenzhen Shokz Co., Ltd.
- Speaker and electronic device27 Aug 2026US 2026/0255092 A1Honor Device Co., Ltd.
- In-vehicle subwoofer23 Jul 2026US 2026/0214376 A1Guangzhou Oaktree Trading Co., Ltd.
- Sensor packaging structure, sensor and electronic device9 Jul 2026US 2026/0197568 A1Goertek Microelectronics Inc.
- Speaker including support structure and electronic device including the same9 Jul 2026US 2026/0197570 A1EM-TECH Co., Ltd.
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Protective housing for an audio device99US 7,535,799 B2H2O Audio, Inc. · 2009
- Sound reproduction system and device80US 4,064,376 ABodysonic Kabushiki Kaisha · 1977
- Panel-form loudspeakers75US 6,198,831 B1New Transducers Limited · 2001