F21L 27/00
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 in lighting devices or systems
F21L27/00 (Lighting devices or systems, employing combinations of electric and non-electric light sources) appears on 15 US grants and 11 published applications in this corpus.
Search patents in F21L- Granted patents
- 15
- Published applications
- 11
- Assignees
- 8
- Inventors
- 21
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 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 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 3 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Birthday candle with automatic lighting effect22 Apr 2025US 12,281,761 B1
- Kerosene lantern conversion kits12 Nov 2024US 12,140,279 B1Barefoot Citizens IP Pty Ltd
- Tritium housing24 Nov 2020US 10,845,161 B2Sherpa Enterprises LLC
- Multifunctional wall lamp with acoustics device3 Nov 2020US 10,823,395 B1Dong Guan Bright Yinhuey Lighting Co., Ltd. China
- Swiveling support for amenities8 Sep 2020US 10,767,842 B2
- Tritium housing19 Mar 2020US 2020/0088496 A1Cammenga Company, LLC
- Apparatus and methods of improvement of solar light lanterns7 Nov 2019US 2019/0338900 A1
- Candle warmer having touch type on/off means7 Jun 2018US 2018/0156434 A1Lepanto Co., Ltd
- Multifunction torch29 Sep 2016US 2016/0281945 A1Lamplight Farms Incorporated
- Swiveling support for amenities23 Jul 2015US 2015/0204460 A1
Most cited
By later US patents
- Flashlight with luminescent housing having a tritium capsule17US 6,257,734 B12001
- Holographic decorative lamp13US 4,947,299 A1990
- Lamp or flashlight for use in cigaret lighter shell8US 5,359,505 AZippo Manufacturing Company · 1994
- Multifunction torch7US 9,797,557 B2Lamplight Farms Incorporated · 2017
- Lighting assembly for use in cigaret lighter shell without reliance on conductivity thereof6US 5,424,929 AZippo Manufacturing Company · 1995