F21V 33/0056
Audio equipment
Official title: {Audio equipment, e.g. music instruments, radios or speakers}
F21V33/0056 (Audio equipment) appears on 668 US grants and 714 published applications in this corpus.
Search patents in F21V- Granted patents
- 668
- Published applications
- 714
- Assignees
- 333
- Inventors
- 1,304
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 8 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 5 |
| 2003 | 1 | 2 |
| 2004 | 4 | 9 |
| 2005 | 3 | 5 |
| 2006 | 7 | 12 |
| 2007 | 2 | 19 |
| 2008 | 5 | 11 |
| 2009 | 10 | 9 |
| 2010 | 6 | 13 |
| 2011 | 10 | 12 |
| 2012 | 11 | 10 |
| 2013 | 5 | 8 |
| 2014 | 10 | 22 |
| 2015 | 16 | 49 |
| 2016 | 32 | 56 |
| 2017 | 46 | 44 |
| 2018 | 49 | 64 |
| 2019 | 59 | 54 |
| 2020 | 72 | 57 |
| 2021 | 64 | 57 |
| 2022 | 56 | 39 |
| 2023 | 53 | 48 |
| 2024 | 28 | 32 |
| 2025 | 49 | 40 |
| 2026 | 29 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lighting-element adaptor22 Sep 2026US 12,742,540 B2Seasons 4, Inc.
- Lighting-element adaptor15 Sep 2026US 12,736,211 B2Seasons 4, Inc.
- Dust cap illumination15 Sep 2026US 12,739,547 B2Harman International Industries, Incorporated
- Voice-controlled rechargeable portable outdoor light8 Sep 2026US 12,733,077 B1Beijing Huitong Hi-Tech Technology Co., Ltd.
- Illumination and sound devices and systems for baby gear25 Aug 2026US 12,716,577 B2
- Headset supporting radio frequency broadcast signals and bluetooth and related systems and methods8 Oct 2026US 2026/0313284 A1Party Headphones, LLC
- Integrated ceiling device with mechanical arrangement for a light source1 Oct 2026US 2026/0298440 A1Lighting Defense Group, LLC
- Audio output device with a light emitting unit1 Oct 2026US 2026/0298460 A1Milwaukee Electric Tool Corporation
- Microphone assembly with multimodal interfaces and sensors1 Oct 2026US 2026/0304053 A1Logitech Europe S. A.
- Speaker24 Sep 2026US 2026/0292379 A1Shenzhen Xingfu Youpin Tech Co., Ltd.
Most cited
By later US patents
- Color changing light devices with active ingredient and sound emission for mood enhancement169US 7,476,002 B2S. C. Johnson & Son, Inc. · 2009
- Driving arrangement for a varying color light emitting element149US 4,668,895 AOmega Electronics S.A. · 1987
- Lighting including integral communication apparatus135US 7,938,562 B2Altair Engineering, Inc. · 2011
- Light, audio and current related assemblies, attachments and devices with conductive compositions113US 5,455,749 A1995
- Audio lamp101US 8,042,961 B22011