H04R 1/2888
For loudspeaker transducers
Official title: {for loudspeaker transducers}
H04R1/2888 (For loudspeaker transducers) appears on 307 US grants and 318 published applications in this corpus.
Search patents in H04R- Granted patents
- 307
- Published applications
- 318
- Assignees
- 163
- Inventors
- 710
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 4 |
| 2003 | 3 | 3 |
| 2004 | 3 | 0 |
| 2005 | 0 | 4 |
| 2006 | 2 | 5 |
| 2007 | 1 | 2 |
| 2008 | 1 | 3 |
| 2009 | 2 | 4 |
| 2010 | 3 | 3 |
| 2011 | 2 | 5 |
| 2012 | 6 | 4 |
| 2013 | 7 | 10 |
| 2014 | 9 | 12 |
| 2015 | 9 | 17 |
| 2016 | 18 | 18 |
| 2017 | 15 | 14 |
| 2018 | 18 | 32 |
| 2019 | 32 | 22 |
| 2020 | 35 | 35 |
| 2021 | 16 | 19 |
| 2022 | 21 | 26 |
| 2023 | 20 | 17 |
| 2024 | 18 | 16 |
| 2025 | 15 | 22 |
| 2026 | 8 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acoustic signal output device15 Sep 2026US 12,739,559 B2NTT, Inc.
- Housing of sound generating device, sound generating device and electronic apparatus thereof25 Aug 2026US 12,720,242 B2Goertek Inc.
- Audio apparatus and a head mounted device including the audio apparatus18 Aug 2026US 12,713,177 B2Tesseract Imaging Limited
- Acoustic insert for earpiece4 Aug 2026US 12,701,354 B23M Innovative Properties Company
- Loudspeakers and methods of use thereof7 Apr 2026US 12,598,429 B2Brane Audio, LLC
- Sound-integrated display apparatus and an electronic apparatus8 Oct 2026US 2026/0313290 A1Postech Research and Business Development Foundation
- Transducer and transducer array17 Sep 2026US 2026/0281612 A1Rohm Co., Ltd.
- Speaker and electronic device27 Aug 2026US 2026/0255092 A1Honor Device Co., Ltd.
- Electronic device comprising waveguide for speaker27 Aug 2026US 2026/0255101 A1Korea Advanced Institute of Science and Technology
- Speaker assemblies and earphones13 Aug 2026US 2026/0238919 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents
- Open-air type earphone201US 4,742,887 ASony Corporation · 1988
- Apparatus for outputting sound comprising multiple receivers and a common output channel78US 8,509,468 B2Sonion Nederland B. V. · 2013
- Loudspeaker having enhanced response at bass frequencies72US 4,756,382 A1988
- Sound output unit for installation in a ceiling structure63US 4,891,842 APosh Diversified, Inc. · 1990
- Audio driver and power supply unit architecture52US 9,930,444 B1Apple Inc. · 2018