F21S 19/00
Lighting devices or systems employing combinations of electric and non-electric light sources
Official title: Lighting devices or systems employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa
F21S19/00 (Lighting devices or systems employing combinations of electric and non-electric light sources) appears on 150 US grants and 174 published applications in this corpus.
Search patents in F21S- Granted patents
- 150
- Published applications
- 174
- Assignees
- 94
- Inventors
- 355
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 2 |
| 2002 | 2 | 6 |
| 2003 | 2 | 3 |
| 2004 | 1 | 3 |
| 2005 | 1 | 5 |
| 2006 | 4 | 8 |
| 2007 | 4 | 6 |
| 2008 | 1 | 2 |
| 2009 | 2 | 6 |
| 2010 | 2 | 7 |
| 2011 | 2 | 7 |
| 2012 | 6 | 15 |
| 2013 | 9 | 13 |
| 2014 | 9 | 11 |
| 2015 | 7 | 13 |
| 2016 | 7 | 6 |
| 2017 | 7 | 7 |
| 2018 | 9 | 14 |
| 2019 | 10 | 5 |
| 2020 | 5 | 9 |
| 2021 | 7 | 3 |
| 2022 | 3 | 9 |
| 2023 | 6 | 4 |
| 2024 | 4 | 5 |
| 2025 | 3 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Surface illumination device, space including surface illumination device, and illumination method26 May 2026US 12,638,147 B2Nitto Denko Corporation
- Container candle device with solid permanent display13 Jan 2026US 12,522,782 B2
- Adhesive-attached window glazing assembly, multi-glazed window assembly and method therefor13 May 2025US 12,297,693 B2
- Candle25 Mar 2025US 12,259,123 B2Reckitt & Colman (Overseas) Hygiene Home Limited
- Lighting fixture and methods11 Feb 2025US 12,225,643 B2Cree Lighting USA LLC
- Hybrid solar-electric lighting system16 Jul 2026US 2026/0202026 A1
- Light-transmitting panel for buildings and method of using same21 May 2026US 2026/0139484 A1
- Multi-glazed window assembly and method therefor21 Aug 2025US 2025/0263973 A1
- Adhesive-attached window glazing assembly, multi-glazed window assembly and method therefor19 Jun 2025US 2025/0196480 A1
- Lighting fixture and methods8 May 2025US 2025/0151183 A1Cree Lighting USA LLC
Most cited
By later US patents
- Light guide plate, surface light source using the light guide plate, and liquid crystal display using the surface light source105US 6,273,577 B1Sanyo Electric Co., Ltd. · 2001
- Lighting system combining daylight concentrators and an artificial source88US 4,539,625 ADHR, Incorporated · 1985
- Lighting system utilizing the sunlight81US 4,389,085 A1983
- System and method of constructing a skylight69US 5,546,712 A1996
- Flameless candle68US 7,029,146 B22006