F21V 9/02
Elements for modifying spectral properties, polarisation or intensity of the light emitted
Official title: for simulating daylight (F21V9/04, F21V9/06 take precedence)
F21V9/02 (Elements for modifying spectral properties, polarisation or intensity of the light emitted) appears on 160 US grants and 184 published applications in this corpus.
Search patents in F21V- Granted patents
- 160
- Published applications
- 184
- Assignees
- 91
- Inventors
- 294
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 3 | 10 |
| 2011 | 2 | 5 |
| 2012 | 1 | 3 |
| 2013 | 2 | 13 |
| 2014 | 5 | 14 |
| 2015 | 6 | 6 |
| 2016 | 8 | 4 |
| 2017 | 11 | 18 |
| 2018 | 8 | 21 |
| 2019 | 18 | 11 |
| 2020 | 21 | 11 |
| 2021 | 9 | 6 |
| 2022 | 9 | 16 |
| 2023 | 6 | 11 |
| 2024 | 14 | 8 |
| 2025 | 9 | 10 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical filter and artificial light illumination device for reproducing the light of the sky and the sun using the same28 Jul 2026US 12,693,462 B2CoeLux S.r.l.
- Light-emitting drawing board14 Jul 2026US 12,680,690 B1
- Lighting fixture with peripheral light emission feature20 Jan 2026US 12,529,464 B2Cree Lighting USA LLC
- Illumination device23 Dec 2025US 12,504,150 B2Mitsubishi Electric Corporation
- Foldable electronic display device having high-density OLED array with transparent region16 Dec 2025US 12,498,107 B2S.V.V. Technology Innovations, Inc.
- Dynamic motorless lighting module for emulating natural light effects1 Oct 2026US 2026/0304579 A1Krobox Sdn Bhd
- Clouds for artificial skylights and windows3 Sep 2026US 2026/0258918 A1Signify Holding B. V.
- Clustering set of leds to enhance color uniformity3 Sep 2026US 2026/0262357 A1Signify Holding B. V.
- Optical filter and lighting device simulating the natural light of the sky and the sun comprising the same27 Aug 2026US 2026/0251286 A1
- Artificial skylight device30 Jul 2026US 2026/0218868 A1Signify Holding B. V.
Most cited
By later US patents
- Fluorescent tube with light emitting diodes234US 6,583,550 B2Toyoda Gosei Co., Ltd. · 2003
- Illumination delivery system for generating sustained secondary emission208US 8,664,624 B2Performance Indicator, LLC · 2014
- Illumination device49US 5,193,900 AMatsushita Electric Industrial Co., Ltd. · 1993
- Variable lighted make-up mirror47US 6,604,836 B2Conair Corporation · 2003
- Sunlight simulating microprocessor alarm clock45US 7,280,439 B12007