F21V 33/0052
Audio or video equipment
Official title: {Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor}
F21V33/0052 (Audio or video equipment) appears on 1,427 US grants and 1,564 published applications in this corpus.
Search patents in F21V- Granted patents
- 1,427
- Published applications
- 1,564
- Assignees
- 720
- Inventors
- 2,791
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 11 | 0 |
| 2000 | 6 | 0 |
| 2001 | 14 | 8 |
| 2002 | 17 | 28 |
| 2003 | 18 | 22 |
| 2004 | 16 | 25 |
| 2005 | 13 | 27 |
| 2006 | 17 | 34 |
| 2007 | 7 | 42 |
| 2008 | 12 | 34 |
| 2009 | 17 | 42 |
| 2010 | 23 | 34 |
| 2011 | 28 | 35 |
| 2012 | 21 | 38 |
| 2013 | 26 | 35 |
| 2014 | 33 | 73 |
| 2015 | 46 | 102 |
| 2016 | 73 | 97 |
| 2017 | 99 | 104 |
| 2018 | 85 | 119 |
| 2019 | 115 | 100 |
| 2020 | 122 | 109 |
| 2021 | 112 | 101 |
| 2022 | 106 | 90 |
| 2023 | 103 | 77 |
| 2024 | 72 | 64 |
| 2025 | 85 | 72 |
| 2026 | 46 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flexible electronic display with contextual illumination6 Oct 2026US 12,753,913 B2Motorola Mobility LLC
- 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.
- In-cabin imaging apparatus8 Oct 2026US 2026/0309307 A1Mitsubishi Electric Mobility Corporation
- Headset supporting radio frequency broadcast signals and bluetooth and related systems and methods8 Oct 2026US 2026/0313284 A1Party Headphones, LLC
- Organic-light emitting diode1 Oct 2026US 2026/0298429 A1Pictiva Displays International Limited
- 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
Most cited
By later US patents
- Auto-exposure method using continuous video frames under controlled illumination567US 8,408,464 B2Metrologic Instruments, Inc. · 2013
- Auto-exposure method using continuous video frames under controlled illumination489US 8,985,456 B2Metrologic Instruments, Inc. · 2015
- Illuminative light communication device346US 7,583,901 B2Nakagawa Laboratories, Inc. · 2009
- Illumination devices for watches and other instruments257US 6,729,738 B2Luminary Logic Ltd. · 2004
- Electronic luminescence keyboard system for a portable device244US 5,684,513 A1997