H04R 7/18
At the periphery
Official title: at the periphery
H04R7/18 (At the periphery) appears on 1,347 US grants and 1,678 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,347
- Published applications
- 1,678
- Assignees
- 446
- Inventors
- 2,257
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 5 |
| 2002 | 8 | 14 |
| 2003 | 9 | 21 |
| 2004 | 14 | 34 |
| 2005 | 13 | 25 |
| 2006 | 14 | 32 |
| 2007 | 17 | 18 |
| 2008 | 16 | 23 |
| 2009 | 18 | 22 |
| 2010 | 12 | 21 |
| 2011 | 24 | 25 |
| 2012 | 30 | 30 |
| 2013 | 20 | 20 |
| 2014 | 24 | 31 |
| 2015 | 34 | 57 |
| 2016 | 44 | 76 |
| 2017 | 62 | 95 |
| 2018 | 94 | 137 |
| 2019 | 113 | 103 |
| 2020 | 110 | 148 |
| 2021 | 111 | 68 |
| 2022 | 60 | 122 |
| 2023 | 91 | 133 |
| 2024 | 118 | 174 |
| 2025 | 129 | 132 |
| 2026 | 82 | 112 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sound device6 Oct 2026US 12,756,981 B2AAC Microtech (Changzhou) Co., Ltd.
- Ultrasonic transducer and parametric speaker including the same22 Sep 2026US 12,745,046 B2Murata Manufacturing Co., Ltd.
- Speaker15 Sep 2026US 12,739,567 B2AAC Microtech (Changzhou) Co., Ltd.
- Capacitive transducer8 Sep 2026US 12,732,756 B2
- Loudspeaker18 Aug 2026US 12,713,176 B2Panasonic Automotive Systems Co., Ltd.
- Loudspeaker with phase plug8 Oct 2026US 2026/0313292 A1Ask Industries Societa' Per Azioni
- Thin balanced armature receiver8 Oct 2026US 2026/0313297 A1Knowles Electronics, LLC
- Audio apparatus1 Oct 2026US 2026/0304027 A1Shenzhen Dancing Future Technology Ltd.
- Open earphones24 Sep 2026US 2026/0292393 A1Shenzhen Shokz Co., Ltd.
- Sound device24 Sep 2026US 2026/0292405 A1LG Electronics Inc.
Most cited
By later US patents
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Ultra low frequency transducer and loud speaker comprising same205US 6,611,604 B1Stillwater Designs and Audio, Inc. · 2003
- Vibration actuator having an elastic member between a suspension plate and a magnetic circuit device159US 6,850,138 B1NEC Tokin Corporation · 2005
- MEMS process and device157US 7,781,249 B2Wolfson Microelectronics plc · 2010