F23N 2221/04
Preheating liquid fuel
F23N2221/04 (Preheating liquid fuel) appears on 18 US grants and 10 published applications in this corpus.
Search patents in F23N- Granted patents
- 18
- Published applications
- 10
- Assignees
- 18
- Inventors
- 43
- Latest grant
- 17 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Pressure-type alcohol stove17 May 2022US 11,333,363 B2Zhejiang Lufeng Outdoor Products Co., Ltd.
- Segregated fired heater30 Mar 2021US 10,962,259 B2Uop LLC
- Turbocharged burner12 May 2020US 10,648,663 B2Pure Methanol Energy Technology Co., Ltd.
- Tridyne ignition and pressurization system for hypersonic vehicles3 Dec 2019US 10,495,027 B1Northrop Grumman Systems Corporation
- Electric heating device2 Jan 2007US 7,158,718 B2Watlow Electric Manufacturing Company
- Method for controlling heating apparatus19 Dec 2024US 2024/0418410 A1Hephzibah Co., Ltd.
- Apparatus for Oil Flow Control13 May 2021US 2021/0140635 A1Preferred Utilities Manufacturing Corporation
- Pressure-type alcohol stove20 Aug 2020US 2020/0263878 A1Zhejiang Lufeng Outdoor Products Co., Ltd.
- Segregated fired heater5 Mar 2020US 2020/0072503 A1Uop LLC
- System for heating kerosene12 Dec 2019US 2019/0380173 A1
Most cited
By later US patents
- Cleaning apparatus for fuel burner45US 4,703,888 AIsuzu Motors Limited · 1987
- Segregated fired heater33US 10,962,259 B2Uop LLC · 2021
- Method and apparatus for use in monitoring and controlling a black liquor recovery furnace24US 5,368,471 AThe Babcock & Wilcox Company · 1994
- Device and method for the combustion of waste oil21US 5,341,832 A1994
- System control means to preheat waste oil for combustion18US 4,877,395 A1989