F21V 37/0004
Details of lighting devices employing combustion as light source, not otherwise provided
Official title: {using liquid fuel}
F21V37/0004 (Details of lighting devices employing combustion as light source, not otherwise provided) appears on 61 US grants and 74 published applications in this corpus.
Search patents in F21V- Granted patents
- 61
- Published applications
- 74
- Assignees
- 27
- Inventors
- 122
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 4 |
| 2006 | 3 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 1 | 7 |
| 2015 | 2 | 2 |
| 2016 | 4 | 6 |
| 2017 | 3 | 3 |
| 2018 | 3 | 3 |
| 2019 | 6 | 4 |
| 2020 | 6 | 4 |
| 2021 | 3 | 0 |
| 2022 | 3 | 8 |
| 2023 | 2 | 1 |
| 2024 | 6 | 5 |
| 2025 | 2 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multiple candle wick assemblies and methods and apparatus for making the same10 Mar 2026US 12,570,922 B2Fil-Tec Holdings, Inc.
- Boron-free impregnating solution for a wick and boron-free wick4 Nov 2025US 12,460,154 B2Schreiber Corporation, Inc.
- Pole mounted torch assembly1 Apr 2025US 12,264,793 B2Lamplight Farms Incorporated
- Flame lamp device having transparent panels forming elongated gaps8 Oct 2024US 12,111,027 B2PLM Global Logistics, LLC
- Smart candle platform and system1 Oct 2024US 12,104,783 B2LuDela Technologies LLC
- Multi-Size Post Cap with Integrated Lighting Holder30 Jul 2026US 2026/0218849 A1
- BuzzCaps9 Apr 2026US 2026/0098421 A1
- Liquid Candle and a Liquid Candle Combined Device15 Jan 2026US 2026/0016154 A1Ningbo Kwung's Wisdom Art & Design Co., Ltd.
- Intelligent Candle System25 Sep 2025US 2025/0297738 A1Alyax, LLC
- Smart candle platform and system24 Apr 2025US 2025/0129933 A1LuDela Technologies LLC
Most cited
By later US patents