H04R 2209/024
Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
H04R2209/024 (Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers) appears on 159 US grants and 191 published applications in this corpus.
Search patents in H04R- Granted patents
- 159
- Published applications
- 191
- Assignees
- 103
- Inventors
- 380
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 2 |
| 2004 | 0 | 6 |
| 2005 | 3 | 4 |
| 2006 | 1 | 6 |
| 2007 | 3 | 3 |
| 2008 | 3 | 2 |
| 2009 | 1 | 5 |
| 2010 | 3 | 5 |
| 2011 | 2 | 4 |
| 2012 | 4 | 5 |
| 2013 | 2 | 2 |
| 2014 | 3 | 6 |
| 2015 | 4 | 11 |
| 2016 | 13 | 22 |
| 2017 | 17 | 13 |
| 2018 | 13 | 11 |
| 2019 | 14 | 10 |
| 2020 | 13 | 13 |
| 2021 | 7 | 7 |
| 2022 | 5 | 8 |
| 2023 | 7 | 11 |
| 2024 | 10 | 12 |
| 2025 | 8 | 12 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Speaker15 Sep 2026US 12,739,567 B2AAC Microtech (Changzhou) Co., Ltd.
- Transducers and manufacturing methods thereof23 Jun 2026US 12,666,205 B2Tymphany Hk Limited
- Loudspeaker and method of manufacture26 May 2026US 12,641,372 B2Pss Belgium NV
- Speaker21 Apr 2026US 12,610,193 B2AAG Microtech (Changzhou) Co., Ltd.
- Loudspeaker structure and loudspeaker device24 Mar 2026US 12,587,794 B2Luxshare Electronic Technology (Kunshan) Ltd.
- Loudspeaker, loudspeaker systems and method23 Jul 2026US 2026/0214389 A1Pss Belgium NV
- Thin multi-magnetic vibration-damping loudspeaker9 Jul 2026US 2026/0197589 A1Fortune Grand Technology Inc.
- Planar-dynamic acoustic transducer9 Jul 2026US 2026/0197591 A1
- Speaker25 Jun 2026US 2026/0181297 A1AAC Microtech (Changzhou) Co., Ltd.
- Speaker25 Jun 2026US 2026/0181331 A1AAC Microtech (Changzhou) Co., Ltd.
Most cited
By later US patents
- Loudspeakers30US 5,898,786 ANokia Technology GmbH · 1999
- Voice coil actuator27US 5,434,458 AAura Systems, Inc. · 1995
- Speaker with a molded plastic frame including a positioning projection, and a method for manufacturing the same26US 5,583,945 AMinebea Co., Ltd. · 1996
- Voice coil actuator25US 5,321,762 AAura Systems, Inc. · 1994
- Speaker and headphone22US 10,499,140 B2Shenzhen Gradsun Electronic Co., Ltd. · 2019