H04R 2400/13
Use or details of compression drivers
H04R2400/13 (Use or details of compression drivers) appears on 96 US grants and 110 published applications in this corpus.
Search patents in H04R- Granted patents
- 96
- Published applications
- 110
- Assignees
- 48
- Inventors
- 146
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 3 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 3 |
| 2015 | 4 | 4 |
| 2016 | 6 | 9 |
| 2017 | 10 | 5 |
| 2018 | 7 | 14 |
| 2019 | 4 | 9 |
| 2020 | 11 | 4 |
| 2021 | 6 | 6 |
| 2022 | 8 | 5 |
| 2023 | 6 | 15 |
| 2024 | 11 | 6 |
| 2025 | 9 | 11 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual compression driver with single magnet16 Jun 2026US 12,659,667 B2Harman Professional, Inc.
- Dual compression driver with internal magnets and annular exit26 May 2026US 12,641,364 B2Harman Professional, Inc.
- Electrodynamic actuator with vibration compensation and method of tuning a sound system with such an actuator26 May 2026US 12,641,371 B2Sound Solutions International (Zhenjiang) Co., Ltd.
- High-precision alignment features for audio transducers21 Apr 2026US 12,610,189 B2Sonos, Inc.
- Speaker unit18 Nov 2025US 12,477,283 B2Yamaha Corporation
- Phase plug for compression drivers6 Aug 2026US 2026/0230747 A1B&C Speakers S.P.A.
- Dual compression driver with inboard annular exit2 Jul 2026US 2026/0189852 A1Harman Professional, Inc.
- Phasing plug for improved directivity response in a compression driver28 May 2026US 2026/0149917 A1Harman International Industries, Incorporated
- Acoustic phase plug with non-circular exit14 May 2026US 2026/0136132 A1B&C Speakers S.P.A.
- Dual compression driver with rectangular exit9 Apr 2026US 2026/0101138 A1Harman Professional, Inc.
Most cited
By later US patents
- Audio driver and power supply unit architecture52US 9,930,444 B1Apple Inc. · 2018
- High frequency compression drivers25US 6,320,970 B12001
- Wave shaping sound chamber23US 6,581,719 B22003
- Apparatus and method for reduced distortion loudspeakers20US 6,026,928 A2000
- Airflow exit geometry17US 10,524,044 B2Apple Inc. · 2019