F02M 21/0227
Means to treat or clean gaseous fuels or fuel systems
Official title: {Means to treat or clean gaseous fuels or fuel systems, e.g. removal of tar, cracking, reforming or enriching}
F02M21/0227 (Means to treat or clean gaseous fuels or fuel systems) appears on 188 US grants and 230 published applications in this corpus.
Search patents in F02M- Granted patents
- 188
- Published applications
- 230
- Assignees
- 133
- Inventors
- 427
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 7 |
| 2003 | 5 | 5 |
| 2004 | 3 | 6 |
| 2005 | 1 | 1 |
| 2006 | 3 | 4 |
| 2007 | 3 | 6 |
| 2008 | 3 | 11 |
| 2009 | 2 | 5 |
| 2010 | 1 | 13 |
| 2011 | 1 | 16 |
| 2012 | 8 | 6 |
| 2013 | 10 | 8 |
| 2014 | 8 | 19 |
| 2015 | 12 | 17 |
| 2016 | 14 | 10 |
| 2017 | 12 | 8 |
| 2018 | 9 | 15 |
| 2019 | 10 | 3 |
| 2020 | 7 | 4 |
| 2021 | 3 | 3 |
| 2022 | 4 | 10 |
| 2023 | 12 | 6 |
| 2024 | 9 | 15 |
| 2025 | 18 | 15 |
| 2026 | 14 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vented methane gas mitigation system with failure detection6 Oct 2026US 12,753,731 B1Caterpillar Inc.
- Power-saving liquefied-gas-fuel ship and method for processing boil-off gas for liquefied-gas-fuel ship6 Oct 2026US 12,753,884 B2Hanwha Ocean Co., Ltd.
- Systems and methods for supplying gaseous ammonia to serially-connected ammonia cracking units1 Sep 2026US 12,723,559 B2First Ammonia Motors, Inc.
- Systems and methods for charging a dedicated power supply for an electric catalyst unit of an on-board ammonia cracking system16 Jun 2026US 12,655,019 B2First Ammonia Motors, Inc.
- Method of operating an internal combustion engine and corresponding arrangement16 Jun 2026US 12,655,815 B2Linde Aktiengesellschaft
- Enhanced feedstock reforming via electrical resistance heating24 Sep 2026US 2026/0285678 A1Blaze Energy Technologies Corporation
- Systems and methods for powering an electric cracking unit of an on-board ammonia cracking system17 Sep 2026US 2026/0274656 A1First Ammonia Motors, Inc.
- Systems and methods for stationary power generation using hydrogen and ammonia co-fuels17 Sep 2026US 2026/0275942 A1First Ammonia Motors, Inc.
- Improvements relating to internal combustion engines3 Sep 2026US 2026/0258758 A1Commonwealth Scientific and Industrial Research Organisation
- Systems and methods for regulating engine coolant flow to control engine temperature and fuel temperature13 Aug 2026US 2026/0233992 A1First Ammonia Motors, Inc.
Most cited
By later US patents
- Remedial system: a pollution control device for utilizing and abating volatile organic compounds178US 8,776,734 B1Innovative Environmental Solutions, LLC · 2014
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008
- Internal combustion engine with SCR and integrated ammonia production68US 6,739,125 B1Collier Technologies, Inc. · 2004
- Self-regenerating system of removing oxygen and water impurities from hydrogen gas64US 4,343,770 ABillings Energy Corporation · 1982
- Method for utilization of a methane-containing gas44US 6,595,001 B2G.A.S. Energietechnologie GmbH · 2003