F21V 37/0012
Filling or level checking
Official title: {Filling or level checking}
F21V37/0012 (Filling or level checking) appears on 10 US grants and 7 published applications in this corpus.
Search patents in F21V- Granted patents
- 10
- Published applications
- 7
- Assignees
- 0
- Inventors
- 14
- Latest grant
- 16 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Torch system with predictive control of automatic fuel replenishment16 Apr 2024US 11,957,120 B2
- Attachable plug for adding features to a torch system22 Nov 2022US 11,503,822 B2
- Liquid fuel burning torch system with automatic fuel replenishment and flame extinguishment8 Nov 2022US 11,493,200 B2
- Insect repellent torch system with automatic fuel replenishment24 Nov 2020US 10,842,146 B1
- Torch refilling assembly21 Jan 2020US 10,539,319 B2
- Torch system with predictive control of automatic fuel replenishment18 Jan 2024US 2024/0016140 A1
- Liquid fuel burning torch system with automatic fuel replenishment and flame extinguishment15 Sep 2022US 2022/0290854 A1
- Attachable plug for adding features to an insect repellent torch20 Jan 2022US 2022/0015351 A1
- Torch Refilling Assembly22 Aug 2019US 2019/0257512 A1
- Apparatus for Candle Nest Holder8 Nov 2018US 2018/0317688 A1
Most cited
By later US patents
- Apparatus for filling lamps12US 4,281,692 A1981
- Insect repellent torch system with automatic fuel replenishment7US 10,842,146 B12020
- Apparatus for candle nest holder5US 10,485,367 B22019
- Systems and methods for refilling liquid fuel candles4US 10,378,754 B12019
- Method of fueling an oil lamp2US 8,678,045 B12014