F21V 29/60
Characterised by the use of a forced flow of gas
Official title: characterised by the use of a forced flow of gas, e.g. air
F21V29/60 (Characterised by the use of a forced flow of gas) appears on 1,303 US grants and 1,483 published applications in this corpus.
Search patents in F21V- Granted patents
- 1,303
- Published applications
- 1,483
- Assignees
- 680
- Inventors
- 2,422
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 5 |
| 2002 | 17 | 15 |
| 2003 | 11 | 14 |
| 2004 | 12 | 26 |
| 2005 | 14 | 35 |
| 2006 | 16 | 43 |
| 2007 | 32 | 42 |
| 2008 | 27 | 42 |
| 2009 | 20 | 71 |
| 2010 | 37 | 116 |
| 2011 | 50 | 119 |
| 2012 | 65 | 90 |
| 2013 | 83 | 106 |
| 2014 | 81 | 87 |
| 2015 | 76 | 71 |
| 2016 | 74 | 78 |
| 2017 | 67 | 69 |
| 2018 | 74 | 80 |
| 2019 | 91 | 76 |
| 2020 | 67 | 60 |
| 2021 | 71 | 55 |
| 2022 | 49 | 47 |
| 2023 | 43 | 41 |
| 2024 | 51 | 42 |
| 2025 | 48 | 32 |
| 2026 | 27 | 21 |
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.
- Light adjustment device, photography light, and photography system18 Aug 2026US 12,710,170 B2Shenzhen Leqi Innovation Co., Ltd.
- LED luminaire thermal management system18 Aug 2026US 12,710,171 B2
- Method of hyperspectral imaging using lamp with double-walled housing18 Aug 2026US 12,710,374 B2Parata Systems, LLC
- Modular light devices, systems, and methods11 Aug 2026US 12,702,121 B2ABL Research Group, LLC
- Led device and led light fixture8 Oct 2026US 2026/0309321 A1Shanghai Weili Advanced Electronic Technology Co., Ltd.
- Led luminaire thermal management system1 Oct 2026US 2026/0298456 A1FOHSE Inc.
- Transportable single unit parabolic lighting system17 Sep 2026US 2026/0276180 A1Cinelease, LLC
- Electronic module group17 Sep 2026US 2026/0276187 A1Lumien Enterprise, Inc.
- Multi-channel lightbulb and bar-type lighting lamp for crop growth6 Aug 2026US 2026/0223786 A1Odysseyglobal Co., Ltd.
Most cited
By later US patents
- Signal light unit having heat dissipating function456US 4,729,076 A1988
- Led lamp424US 6,220,722 B1U. S. Philips Corporation · 2001
- Thermal management methods and apparatus for lighting devices395US 7,344,279 B2Philips Solid-State Lighting Solutions, Inc. · 2008
- Computer controlled lighting system having automatically variable position, color, intensity and beam divergence386US 4,392,187 AVari-Lite, Inc. · 1983
- LED-based fixtures and related methods for thermal management313US 7,828,465 B2Koninlijke Philips Electronis N.V. · 2010