F21V 29/50
Cooling arrangements
Official title: Cooling arrangements (air-treatment systems dissipating or using the heat of lighting fixtures F24F3/056)
F21V29/50 (Cooling arrangements) appears on 8,973 US grants and 10,628 published applications in this corpus.
Search patents in F21V- Granted patents
- 8,973
- Published applications
- 10,628
- Assignees
- 2,876
- Inventors
- 12,893
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 9 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 13 | 0 |
| 1987 | 15 | 0 |
| 1988 | 14 | 0 |
| 1989 | 17 | 0 |
| 1990 | 15 | 0 |
| 1991 | 22 | 0 |
| 1992 | 25 | 0 |
| 1993 | 17 | 0 |
| 1994 | 21 | 0 |
| 1995 | 22 | 0 |
| 1996 | 16 | 0 |
| 1997 | 27 | 0 |
| 1998 | 36 | 0 |
| 1999 | 36 | 0 |
| 2000 | 34 | 0 |
| 2001 | 30 | 17 |
| 2002 | 55 | 69 |
| 2003 | 71 | 74 |
| 2004 | 56 | 107 |
| 2005 | 71 | 184 |
| 2006 | 97 | 202 |
| 2007 | 147 | 231 |
| 2008 | 125 | 312 |
| 2009 | 166 | 521 |
| 2010 | 296 | 618 |
| 2011 | 364 | 677 |
| 2012 | 421 | 800 |
| 2013 | 563 | 841 |
| 2014 | 585 | 794 |
| 2015 | 579 | 695 |
| 2016 | 602 | 660 |
| 2017 | 617 | 644 |
| 2018 | 596 | 611 |
| 2019 | 730 | 565 |
| 2020 | 611 | 529 |
| 2021 | 491 | 389 |
| 2022 | 374 | 309 |
| 2023 | 300 | 246 |
| 2024 | 286 | 232 |
| 2025 | 209 | 156 |
| 2026 | 123 | 145 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F21V 29/70Characterised by passive heat-dissipating elements7,623
- F21V 29/502Characterised by the adaptation for cooling of specific components2,398
- F21V 29/60Characterised by the use of a forced flow of gas1,303
- F21V 29/51Using condensation or evaporation of a fluid528
- F21V 29/56Using liquid coolants463
- F21V 29/54Using thermoelectric means107
Recent patents
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- Luminaire having a back plate with opening for relasably attached driver8 Oct 2026US 2026/0309318 A1Signify Holding B. V.
- Composite printed circuit board apparatus8 Oct 2026US 2026/0309319 A1Whelen Engineering Company, Inc.
- Led device and led light fixture8 Oct 2026US 2026/0309321 A1Shanghai Weili Advanced Electronic Technology Co., Ltd.
- Solid State Lamp Using Light Emitting Strips1 Oct 2026US 2026/0298419 A1Quarkstar LLC
Most cited
By later US patents
- LED beacon light704US 5,806,965 AR & M Deese Inc. · 1998
- LED vehicle lamp assembly654US 5,632,551 AGrote Industries, Inc. · 1997
- Lighting methods and systems641US 7,178,941 B2Color Kinetics Incorporated · 2007
- Indicators and illuminators using a semiconductor radiation emitter package518US 6,441,943 B1Gentex Corporation · 2002
- Vehicular lamp502US 4,733,335 AKoito Manufacturing Co., Ltd. · 1988