F21V 29/56
Using liquid coolants
Official title: using liquid coolants (F21V29/51 takes precedence)
F21V29/56 (Using liquid coolants) appears on 463 US grants and 535 published applications in this corpus.
Search patents in F21V- Granted patents
- 463
- Published applications
- 535
- Assignees
- 300
- Inventors
- 944
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 5 |
| 2003 | 5 | 4 |
| 2004 | 3 | 6 |
| 2005 | 4 | 16 |
| 2006 | 6 | 12 |
| 2007 | 11 | 19 |
| 2008 | 9 | 15 |
| 2009 | 7 | 16 |
| 2010 | 11 | 23 |
| 2011 | 8 | 31 |
| 2012 | 14 | 38 |
| 2013 | 29 | 42 |
| 2014 | 41 | 54 |
| 2015 | 22 | 31 |
| 2016 | 31 | 26 |
| 2017 | 21 | 26 |
| 2018 | 29 | 27 |
| 2019 | 30 | 23 |
| 2020 | 22 | 17 |
| 2021 | 28 | 27 |
| 2022 | 17 | 19 |
| 2023 | 18 | 17 |
| 2024 | 22 | 17 |
| 2025 | 14 | 12 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lamp module group25 Aug 2026US 12,716,558 B2Lumien Enterprise, Inc.
- LED light source device and biochemical analysis device25 Aug 2026US 12,716,579 B2Hitachi High-Tech Corporation
- Electronic module group23 Jun 2026US 12,663,146 B2Lumien Enterprise, Inc.
- Lighting assemblies with heat-dissipating properties principally for swimming pools and spas26 May 2026US 12,638,167 B2Zodiac Pool Systems LLC
- Energy management system and method in combined greenhouses and vertical farms17 Feb 2026US 12,550,832 B2
- Electronic module group17 Sep 2026US 2026/0276187 A1Lumien Enterprise, Inc.
- Water-cooled hollow heat sink system and method related applications30 Jul 2026US 2026/0217569 A1Pentair, Inc.
- Projection-type image display apparatus23 Jul 2026US 2026/0211306 A1Panasonic Projector & Display Corporation
- Worksite Lamp2 Jul 2026US 2026/0185690 A1Robert Bosch GmbH
- Led system and method with remote heat dissipation unit2 Jul 2026US 2026/0185691 A1NBCUniversal Media, LLC
Most cited
By later US patents
- Lighting units429US 5,890,794 A1999
- Methods and apparatus for illumination of liquids325US 6,781,329 B2Color Kinetics Incorporated · 2004
- High intensity lighting projectors319US 5,282,121 AVari-Lite, Inc. · 1994
- High power radiation emitter device and heat dissipating package for electronic components249US 6,639,360 B2Gentex Corporation · 2003
- Thermally efficient LED bulb177US 7,086,767 B2Osram Sylvania Inc. · 2006