F21V 23/0464
The sensor sensing the level of ambient illumination
Official title: {the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors}
F21V23/0464 (The sensor sensing the level of ambient illumination) appears on 770 US grants and 885 published applications in this corpus.
Search patents in F21V- Granted patents
- 770
- Published applications
- 885
- Assignees
- 415
- Inventors
- 1,539
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
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| 1988 | 1 | 0 |
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| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 6 |
| 2006 | 1 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 5 |
| 2009 | 3 | 9 |
| 2010 | 1 | 8 |
| 2011 | 5 | 11 |
| 2012 | 17 | 34 |
| 2013 | 14 | 50 |
| 2014 | 25 | 51 |
| 2015 | 50 | 69 |
| 2016 | 49 | 63 |
| 2017 | 57 | 72 |
| 2018 | 65 | 79 |
| 2019 | 78 | 74 |
| 2020 | 74 | 82 |
| 2021 | 81 | 72 |
| 2022 | 63 | 54 |
| 2023 | 69 | 52 |
| 2024 | 51 | 28 |
| 2025 | 35 | 34 |
| 2026 | 18 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Exterior mirror with indicator165US 7,944,371 B2Magna Mirrors of America, Inc. · 2011
- Methods and apparatus for downloading lighting programs146US 7,550,935 B2Philips Solid-State Lighting Solutions, Inc. · 2009
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- Imitation candle123US 6,616,308 B2Jenesis International Inc. · 2003
- Lamp brightness control circuit with ambient light compensation118US 5,581,158 AEtta Industries, Inc. · 1996