F02C 3/22
The fuel or oxidant being gaseous at standard temperature and pressure
Official title: the fuel or oxidant being gaseous at standard temperature and pressure (F02C3/28 takes precedence)
F02C3/22 (The fuel or oxidant being gaseous at standard temperature and pressure) appears on 817 US grants and 1,113 published applications in this corpus.
Search patents in F02C- Granted patents
- 817
- Published applications
- 1,113
- Assignees
- 291
- Inventors
- 1,691
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 5 |
| 2002 | 12 | 10 |
| 2003 | 14 | 8 |
| 2004 | 8 | 16 |
| 2005 | 10 | 22 |
| 2006 | 6 | 9 |
| 2007 | 6 | 24 |
| 2008 | 11 | 22 |
| 2009 | 8 | 23 |
| 2010 | 14 | 23 |
| 2011 | 14 | 28 |
| 2012 | 19 | 24 |
| 2013 | 21 | 29 |
| 2014 | 15 | 62 |
| 2015 | 21 | 45 |
| 2016 | 29 | 35 |
| 2017 | 31 | 34 |
| 2018 | 32 | 32 |
| 2019 | 22 | 23 |
| 2020 | 27 | 33 |
| 2021 | 34 | 38 |
| 2022 | 31 | 75 |
| 2023 | 52 | 109 |
| 2024 | 106 | 161 |
| 2025 | 129 | 120 |
| 2026 | 72 | 103 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dilute combustion of hydrogen in retrofitted gas turbine engines6 Oct 2026US 12,753,722 B2University of Florida Research Foundation, Inc.
- Aircraft comprising a dihydrogen supply system and a dihydrogen heat treatment system6 Oct 2026US 12,753,723 B2Airbus Operations GmbH
- Gas turbine engine including hydrogen-compatible fuel-air mixer with multi-jet mixing tube6 Oct 2026US 12,753,923 B2General Electric Company
- Methods and apparatus for a cryogenic fuel distribution system using a bypass29 Sep 2026US 12,747,706 B2GE Avio S. r. l.
- Gas turbine engine8 Sep 2026US 12,729,644 B2ROLLS-ROYCE plc
- Liquid hydrogen pumping system8 Oct 2026US 2026/0309078 A1Eaton Intelligent Power Limited
- Combustion system and control method8 Oct 2026US 2026/0309100 A1IHI Corporation
- Sign detection device, sign detection method, and sign detection program1 Oct 2026US 2026/0298106 A1Mitsubishi Heavy Industries, Ltd.
- Aircraft exhaust waste heat recovery for icing mitigation1 Oct 2026US 2026/0298141 A1General Electric Company
- System and method for cooling an aircraft turbine engine24 Sep 2026US 2026/0286891 A1Safran Aircraft Engines
Most cited
By later US patents
- System for pumping hydraulic fracturing fluid using electric pumps342US 9,410,410 B2U.S. Well Services, LLC · 2016
- Substoichiometric combustion of low heating value gases325US 4,381,641 AGulf Research & Development Company · 1983
- Utilization of energy obtained by substoichiometric combustion of low heating value gases296US 4,299,086 AGulf Research & Development Company · 1981
- Switchgear load sharing for oil field equipment262US 9,893,500 B2U.S. Well Services, LLC · 2018
- Remote monitoring for hydraulic fracturing equipment248US 9,840,901 B2U.S. Well Services, LLC · 2017