F21K 9/232
Specially adapted for generating an essentially omnidirectional light distribution
Official title: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
F21K9/232 (Specially adapted for generating an essentially omnidirectional light distribution) appears on 2,477 US grants and 3,177 published applications in this corpus.
Search patents in F21K- Granted patents
- 2,477
- Published applications
- 3,177
- Assignees
- 787
- Inventors
- 3,495
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 2 |
| 2002 | 8 | 8 |
| 2003 | 14 | 16 |
| 2004 | 16 | 30 |
| 2005 | 8 | 35 |
| 2006 | 14 | 27 |
| 2007 | 12 | 20 |
| 2008 | 18 | 28 |
| 2009 | 22 | 53 |
| 2010 | 25 | 121 |
| 2011 | 40 | 223 |
| 2012 | 99 | 275 |
| 2013 | 174 | 315 |
| 2014 | 185 | 307 |
| 2015 | 188 | 234 |
| 2016 | 207 | 224 |
| 2017 | 198 | 182 |
| 2018 | 192 | 217 |
| 2019 | 215 | 190 |
| 2020 | 193 | 174 |
| 2021 | 166 | 117 |
| 2022 | 133 | 116 |
| 2023 | 111 | 91 |
| 2024 | 111 | 70 |
| 2025 | 79 | 53 |
| 2026 | 29 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Methods and apparatus for providing power to lighting devices771US 7,038,399 B2Color Kinetics Incorporated · 2006
- LED beacon light704US 5,806,965 AR & M Deese Inc. · 1998
- Multicolored LED lighting method and apparatus581US 6,788,011 B2Color Kinetics Incorporated · 2004
- Light emitting diode retrofit lamp552US 5,463,280 ANational Service Industries, Inc. · 1995
- Multicolored LED lighting method and apparatus550US 6,806,659 B1Color Kinetics Incorporated · 2004