F02M 21/02
Apparatus for supplying engines with non-liquid fuels: for gaseous fuels
Official title: for gaseous fuels
F02M21/02 (Apparatus for supplying engines with non-liquid fuels: for gaseous fuels) appears on 2,330 US grants and 2,501 published applications in this corpus.
Search patents in F02M- Granted patents
- 2,330
- Published applications
- 2,501
- Assignees
- 829
- Inventors
- 4,245
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 16 | 0 |
| 1984 | 19 | 0 |
| 1985 | 27 | 0 |
| 1986 | 10 | 0 |
| 1987 | 13 | 0 |
| 1988 | 7 | 0 |
| 1989 | 17 | 0 |
| 1990 | 7 | 0 |
| 1991 | 17 | 0 |
| 1992 | 19 | 0 |
| 1993 | 14 | 0 |
| 1994 | 26 | 0 |
| 1995 | 32 | 0 |
| 1996 | 28 | 0 |
| 1997 | 24 | 0 |
| 1998 | 36 | 0 |
| 1999 | 31 | 0 |
| 2000 | 31 | 0 |
| 2001 | 30 | 13 |
| 2002 | 37 | 39 |
| 2003 | 41 | 39 |
| 2004 | 37 | 61 |
| 2005 | 38 | 59 |
| 2006 | 43 | 42 |
| 2007 | 45 | 55 |
| 2008 | 47 | 62 |
| 2009 | 28 | 68 |
| 2010 | 36 | 64 |
| 2011 | 38 | 82 |
| 2012 | 47 | 76 |
| 2013 | 44 | 110 |
| 2014 | 73 | 194 |
| 2015 | 118 | 202 |
| 2016 | 126 | 167 |
| 2017 | 138 | 125 |
| 2018 | 134 | 142 |
| 2019 | 131 | 116 |
| 2020 | 107 | 107 |
| 2021 | 91 | 67 |
| 2022 | 95 | 89 |
| 2023 | 111 | 117 |
| 2024 | 97 | 139 |
| 2025 | 114 | 142 |
| 2026 | 68 | 124 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Controller for a fuel supply system29 Sep 2026US 12,747,709 B2Toyota Jidosha Kabushiki Kaisha
- Hydrogen mixed-combustion electronic control device and power generation system using same15 Sep 2026US 12,736,014 B2Hitachi, Ltd.
- Injector for gaseous fuel8 Sep 2026US 12,729,660 B2Phinia Delphi Luxembourg Sarl
- Hydrogen Supply System for an Internal Combustion Engine8 Oct 2026US 2026/0309107 A1Robert Bosch GmbH
- Fuel supply system, and vehicle1 Oct 2026US 2026/0298160 A1Isuzu Motors Limited
- Internal combustion engine1 Oct 2026US 2026/0298179 A1Toyota Jidosha Kabushiki Kaisha
- Integrated fuel supply and injection system suitable for ammonia-hydrogen blending1 Oct 2026US 2026/0298180 A1Tianjin University
- Enhanced feedstock reforming via electrical resistance heating24 Sep 2026US 2026/0285678 A1Blaze Energy Technologies Corporation
Most cited
By later US patents
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003
- Method and apparatus for operating a dual fuel internal combustion engine226US 7,627,416 B2Westport Power Inc. · 2009
- System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines180US 10,287,943 B1Clean Power Technologies, LLC · 2019
- Remedial system: a pollution control device for utilizing and abating volatile organic compounds178US 8,776,734 B1Innovative Environmental Solutions, LLC · 2014
- Reformed natural gas for powering an internal combustion engine177US 6,508,209 B12003