F23K 5/02
Liquid fuel
F23K5/02 (Liquid fuel) appears on 721 US grants and 622 published applications in this corpus.
Search patents in F23K- Granted patents
- 721
- Published applications
- 622
- Assignees
- 374
- Inventors
- 1,469
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 12 | 0 |
| 1980 | 12 | 0 |
| 1981 | 17 | 0 |
| 1982 | 14 | 0 |
| 1983 | 19 | 0 |
| 1984 | 17 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 3 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 18 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 16 | 0 |
| 2001 | 13 | 6 |
| 2002 | 9 | 12 |
| 2003 | 13 | 20 |
| 2004 | 14 | 30 |
| 2005 | 16 | 16 |
| 2006 | 7 | 18 |
| 2007 | 7 | 28 |
| 2008 | 11 | 22 |
| 2009 | 10 | 17 |
| 2010 | 14 | 39 |
| 2011 | 13 | 18 |
| 2012 | 15 | 28 |
| 2013 | 17 | 34 |
| 2014 | 17 | 29 |
| 2015 | 26 | 28 |
| 2016 | 31 | 45 |
| 2017 | 23 | 39 |
| 2018 | 23 | 30 |
| 2019 | 30 | 24 |
| 2020 | 26 | 29 |
| 2021 | 25 | 21 |
| 2022 | 26 | 22 |
| 2023 | 21 | 15 |
| 2024 | 21 | 25 |
| 2025 | 13 | 15 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Combustion of fuel22 Sep 2026US 12,742,417 B2ROLLS-ROYCE plc
- Burner for liquid fuel and method for operating such burner15 Sep 2026US 12,736,216 B2Aduro A/S
- Arrangement handling purged alcohol-based fuel and a method thereof8 Sep 2026US 12,729,853 B2Alfa Laval Corporate AB
- Fuel systems and methods for purging4 Aug 2026US 12,698,743 B2Pratt & Whitney Canada Corp.
- Additively manufacturable filter for gas turbine16 Jun 2026US 12,655,973 B1GE Vernova Infrastructure Technology LLC
- Gas turbine engine fuel system8 Oct 2026US 2026/0309083 A1General Electric Company
- Soot detection method for mild combustion system of tar-containing biomass gasified gas1 Oct 2026US 2026/0298793 A1Tianjin University
- Combustion system24 Sep 2026US 2026/0287176 A1IHI Corporation
- Apparatus and Methods for Efficient Conversion of Heat to Electricity via Emission of Characteristic Radiation10 Sep 2026US 2026/0269769 A1LightCell Inc.
- Method for promoting combustion of combustible and enhancing power output and usage life of combustion equipment27 Aug 2026US 2026/0250589 A1Qingdao Hengnengda Energy Technologies Co., Ltd.
Most cited
By later US patents
- Methods and apparatus for a combustion turbine fuel recirculation system and nitrogen purge system173US 7,721,521 B2General Electric Company · 2010
- Methods and apparatus for a combustion turbine nitrogen purge system171US 7,730,711 B2General Electric Company · 2010
- Method and apparatus to increase combustion efficiency and to reduce exhaust gas pollutants from combustion of a fuel158US 6,851,413 B1Ronnell Company, Inc. · 2005
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008
- Emulsifying system121US 4,117,550 AFolland Enertec Ltd. · 1978