H04R 2400/00
Loudspeakers
H04R2400/00 (Loudspeakers) appears on 1,998 US grants and 2,517 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,998
- Published applications
- 2,517
- Assignees
- 641
- Inventors
- 3,479
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 4 |
| 2002 | 8 | 24 |
| 2003 | 13 | 17 |
| 2004 | 10 | 23 |
| 2005 | 12 | 30 |
| 2006 | 15 | 20 |
| 2007 | 15 | 31 |
| 2008 | 16 | 12 |
| 2009 | 8 | 13 |
| 2010 | 11 | 19 |
| 2011 | 15 | 30 |
| 2012 | 16 | 27 |
| 2013 | 22 | 30 |
| 2014 | 33 | 60 |
| 2015 | 47 | 79 |
| 2016 | 73 | 102 |
| 2017 | 98 | 129 |
| 2018 | 122 | 144 |
| 2019 | 151 | 168 |
| 2020 | 188 | 272 |
| 2021 | 205 | 200 |
| 2022 | 166 | 188 |
| 2023 | 162 | 226 |
| 2024 | 214 | 302 |
| 2025 | 196 | 193 |
| 2026 | 158 | 174 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04R 2400/11Aspects regarding the frame of loudspeaker transducersIndexing code1,011
- H04R 2400/03Transducers capable of generating both sound as well as tactile vibrationIndexing code603
- H04R 2400/01Transducers used as a loudspeaker to generate sound aswell as a microphoneIndexing code187
- H04R 2400/07Suspension between moving magnetic core and housingIndexing code160
- H04R 2400/13Use or details of compression driversIndexing code96
Recent patents
- User identification with audio earbuds6 Oct 2026US 12,755,745 B2Intel Corporation
- Electronic device including sound device6 Oct 2026US 12,756,973 B2Samsung Electronics Co., Ltd.
- Sound device6 Oct 2026US 12,756,981 B2AAC Microtech (Changzhou) Co., Ltd.
- Apparatuses and methods for deactivating speakers of wireless tracking devices29 Sep 2026US 12,749,471 B1Elevation Lab, Inc.
- Loudspeaker and loudspeaker manufacturing method29 Sep 2026US 12,750,614 B2Panasonic Automotive Systems Co., Ltd.
- Loudspeaker with phase plug8 Oct 2026US 2026/0313292 A1Ask Industries Societa' Per Azioni
- Electronic device1 Oct 2026US 2026/0304013 A1Honor Device Co., Ltd.
- Smart Touchscreen Headphones24 Sep 2026US 2026/0292383 A1
- Display Module and Display Apparatus24 Sep 2026US 2026/0292390 A1Boe Technology Group Co., Ltd.
- Open earphones24 Sep 2026US 2026/0292393 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents
- Loudspeaker position estimation330US 8,279,709 B2Bang & Olufsen A/S · 2012
- Acoustic device295US 6,332,029 B1New Transducers Limited · 2001
- Audio assemblies for electronic devices231US 9,641,919 B1Amazon Technologies, Inc. · 2017
- Acoustic device206US 7,158,647 B2New Transducers Limited · 2007
- Cellular phone with high-quality sound reproduction capability198US 6,819,939 B2NEC Viewtechnology, Ltd. · 2004