F21V 23/0457
The sensor sensing the operating status of the lighting device
Official title: {the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device}
F21V23/0457 (The sensor sensing the operating status of the lighting device) appears on 283 US grants and 352 published applications in this corpus.
Search patents in F21V- Granted patents
- 283
- Published applications
- 352
- Assignees
- 187
- Inventors
- 603
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 1 |
| 2004 | 2 | 3 |
| 2005 | 0 | 8 |
| 2006 | 2 | 8 |
| 2007 | 6 | 5 |
| 2008 | 4 | 11 |
| 2009 | 6 | 16 |
| 2010 | 8 | 21 |
| 2011 | 9 | 19 |
| 2012 | 11 | 18 |
| 2013 | 13 | 18 |
| 2014 | 15 | 12 |
| 2015 | 12 | 20 |
| 2016 | 14 | 18 |
| 2017 | 9 | 20 |
| 2018 | 19 | 27 |
| 2019 | 30 | 25 |
| 2020 | 28 | 28 |
| 2021 | 16 | 13 |
| 2022 | 21 | 18 |
| 2023 | 17 | 16 |
| 2024 | 11 | 12 |
| 2025 | 16 | 5 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Systems and methods for generating and modulating illumination conditions693US 7,014,336 B1Color Kinetics Incorporated · 2006
- Methods and apparatus for generating and modulating illumination conditions461US 7,255,457 B2Color Kinetics Incorporated · 2007
- LED luminaire with electronically adjusted color balance431US 6,127,783 APhilips Electronics North America Corporation · 2000
- Thermal management methods and apparatus for lighting devices395US 7,344,279 B2Philips Solid-State Lighting Solutions, Inc. · 2008
- Conventionally-shaped light bulbs employing white LEDs331US 7,350,936 B2Philips Solid-State Lighting Solutions, Inc. · 2008