F21V 9/00
Elements for modifying spectral properties, polarisation or intensity of the light emitted
Official title: Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters (coloured shades F21V1/00; elements characterised by cooling arrangements F21V29/502)
F21V9/00 (Elements for modifying spectral properties, polarisation or intensity of the light emitted) appears on 4,158 US grants and 4,494 published applications in this corpus.
Search patents in F21V- Granted patents
- 4,158
- Published applications
- 4,494
- Assignees
- 1,380
- Inventors
- 6,643
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 14 | 0 |
| 1978 | 18 | 0 |
| 1979 | 13 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 10 | 0 |
| 1986 | 13 | 0 |
| 1987 | 17 | 0 |
| 1988 | 10 | 0 |
| 1989 | 17 | 0 |
| 1990 | 18 | 0 |
| 1991 | 29 | 0 |
| 1992 | 35 | 0 |
| 1993 | 29 | 0 |
| 1994 | 26 | 0 |
| 1995 | 16 | 0 |
| 1996 | 29 | 0 |
| 1997 | 22 | 0 |
| 1998 | 35 | 0 |
| 1999 | 26 | 0 |
| 2000 | 34 | 0 |
| 2001 | 32 | 10 |
| 2002 | 36 | 40 |
| 2003 | 53 | 55 |
| 2004 | 35 | 40 |
| 2005 | 26 | 69 |
| 2006 | 38 | 55 |
| 2007 | 36 | 45 |
| 2008 | 30 | 82 |
| 2009 | 29 | 91 |
| 2010 | 60 | 102 |
| 2011 | 50 | 124 |
| 2012 | 69 | 155 |
| 2013 | 121 | 318 |
| 2014 | 160 | 291 |
| 2015 | 206 | 324 |
| 2016 | 262 | 259 |
| 2017 | 296 | 341 |
| 2018 | 293 | 334 |
| 2019 | 374 | 311 |
| 2020 | 335 | 300 |
| 2021 | 255 | 260 |
| 2022 | 247 | 267 |
| 2023 | 188 | 191 |
| 2024 | 225 | 183 |
| 2025 | 155 | 145 |
| 2026 | 88 | 102 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F21V 9/30Elements containing photoluminescent material distinct from or spaced from the light source1,816
- F21V 9/08Elements for modifying spectral properties, polarisation or intensity of the light emitted1,168
- F21V 9/40Elements for modifying spectral properties, polarisation or intensity of the light emitted848
- F21V 9/14Elements for modifying spectral properties, polarisation or intensity of the light emitted278
- F21V 9/06Elements for modifying spectral properties, polarisation or intensity of the light emitted225
- F21V 9/04Elements for modifying spectral properties, polarisation or intensity of the light emitted185
- F21V 9/20Dichroic filters, i.e. devices operating on the principle of wave interference to174
- F21V 9/02Elements for modifying spectral properties, polarisation or intensity of the light emitted160
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Most cited
By later US patents
- Illumination devices using natural light LEDs1,018US 8,992,042 B2Halma Holdings, Inc. · 2015
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- Led assembly631US 6,132,072 AGentex Corporation · 2000
- Lighting system590US 6,234,648 B1U. S. Philips Corporation · 2001
- Light emitting device and system providing white light with various color temperatures564US 8,459,832 B2Samsung Electronics Co., Ltd. · 2013