F02D 41/0027
The fuel being gaseous
Official title: {the fuel being gaseous (non-electrical control F02D19/02)}
F02D41/0027 (The fuel being gaseous) appears on 1,154 US grants and 1,373 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,154
- Published applications
- 1,373
- Assignees
- 388
- Inventors
- 2,133
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 16 | 3 |
| 2002 | 12 | 11 |
| 2003 | 11 | 13 |
| 2004 | 17 | 20 |
| 2005 | 7 | 19 |
| 2006 | 23 | 13 |
| 2007 | 15 | 13 |
| 2008 | 14 | 15 |
| 2009 | 10 | 29 |
| 2010 | 16 | 33 |
| 2011 | 16 | 39 |
| 2012 | 23 | 44 |
| 2013 | 28 | 62 |
| 2014 | 29 | 91 |
| 2015 | 46 | 117 |
| 2016 | 86 | 116 |
| 2017 | 88 | 72 |
| 2018 | 73 | 82 |
| 2019 | 79 | 93 |
| 2020 | 77 | 63 |
| 2021 | 75 | 49 |
| 2022 | 60 | 59 |
| 2023 | 65 | 72 |
| 2024 | 77 | 77 |
| 2025 | 80 | 98 |
| 2026 | 43 | 70 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Methods and apparatus for operation of multiple fuel engines199US 7,222,015 B2Engine Control Technology, LLC · 2007
- Multiple operating mode engine and method of operation134US 6,561,157 B2Cummins Inc. · 2003
- Optimized lambda and compression temperature control for compression ignition engines133US 6,273,076 B1Servojet Products International · 2001
- Lambda control by skip fire of unthrottled gas fueled engines117US 5,553,575 AServojet Products International · 1996
- Method and apparatus for dual fuel injection into an internal combustion engine93US 6,202,601 B1Westport Research Inc. · 2001