H04R 9/047
In which the windings of the moving coil lay in the same
Official title: {in which the windings of the moving coil lay in the same plane}
H04R9/047 (In which the windings of the moving coil lay in the same) appears on 333 US grants and 309 published applications in this corpus.
Search patents in H04R- Granted patents
- 333
- Published applications
- 309
- Assignees
- 191
- Inventors
- 568
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 8 |
| 2003 | 2 | 3 |
| 2004 | 4 | 14 |
| 2005 | 2 | 7 |
| 2006 | 10 | 8 |
| 2007 | 7 | 7 |
| 2008 | 3 | 9 |
| 2009 | 2 | 11 |
| 2010 | 0 | 5 |
| 2011 | 13 | 13 |
| 2012 | 14 | 11 |
| 2013 | 8 | 8 |
| 2014 | 5 | 9 |
| 2015 | 10 | 8 |
| 2016 | 9 | 13 |
| 2017 | 20 | 12 |
| 2018 | 15 | 23 |
| 2019 | 19 | 7 |
| 2020 | 13 | 18 |
| 2021 | 16 | 20 |
| 2022 | 17 | 17 |
| 2023 | 13 | 17 |
| 2024 | 15 | 26 |
| 2025 | 17 | 11 |
| 2026 | 13 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Micro speaker structure including diaphragm with locally thinner regions and method for forming the same22 Sep 2026US 12,745,043 B2Fortemedia, Inc.
- Magnetic-resonance compatible earphone, magnetic-resonance compatible intercom system and head coil apparatus11 Aug 2026US 12,707,179 B2Siemens Healthineers AG
- Multi-layer board actuator having a planar magnet and voice coil4 Aug 2026US 12,701,364 B2Apple Inc.
- Electronic device14 Jul 2026US 12,684,297 B2Merry Electronics (Suzhou) Co., Ltd.
- Linear speaker16 Jun 2026US 12,659,669 B2Daehong Technew Co., Ltd
- Electromagnetic transducer with dual flux20 Aug 2026US 2026/0243733 A1Cochlear Limited
- Loudspeaker20 Aug 2026US 2026/0247077 A1Merry Electronics (Suzhou) Co., Ltd.
- Loudspeaker20 Aug 2026US 2026/0247078 A1Merry Electronics (Suzhou) Co., Ltd.
- Electrodynamic mems loudspeaker13 Aug 2026US 2026/0238924 A1Zhejiang Normal University
- Sound Generator13 Aug 2026US 2026/0238928 A1AAC Microtech (Changzhou) Co., Ltd.
Most cited
By later US patents
- Mechanical vibrating element238US 4,421,381 AYokogawa Hokushin Electric Corporation · 1983
- One-magnet rectangular transducer86US 7,254,248 B2Sonion Horsens A/S · 2007
- Electroacoustic transducer85US 7,062,063 B2Sonion Horsens A/S · 2006
- Coil for an electroacoustic transducer80US 7,376,240 B2Sonion Horsens A/S · 2008
- Audio-band electromechanical vibration converter66US 4,354,067 ABodysonic Kabushiki Kaisha · 1982