F02D 19/0647
The gaseous fuel being liquefied petroleum gas [lpg], liquefied natural gas [lng]
Official title: {the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]}
F02D19/0647 (The gaseous fuel being liquefied petroleum gas [lpg], liquefied natural gas [lng]) appears on 517 US grants and 582 published applications in this corpus.
Search patents in F02D- Granted patents
- 517
- Published applications
- 582
- Assignees
- 240
- Inventors
- 1,004
- Latest grant
- 8 Sep 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 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 7 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 10 |
| 2003 | 11 | 11 |
| 2004 | 7 | 6 |
| 2005 | 6 | 2 |
| 2006 | 1 | 3 |
| 2007 | 4 | 3 |
| 2008 | 4 | 3 |
| 2009 | 4 | 14 |
| 2010 | 9 | 17 |
| 2011 | 5 | 25 |
| 2012 | 13 | 35 |
| 2013 | 14 | 47 |
| 2014 | 25 | 70 |
| 2015 | 46 | 69 |
| 2016 | 52 | 44 |
| 2017 | 43 | 39 |
| 2018 | 31 | 22 |
| 2019 | 32 | 29 |
| 2020 | 21 | 20 |
| 2021 | 25 | 12 |
| 2022 | 15 | 16 |
| 2023 | 28 | 27 |
| 2024 | 25 | 13 |
| 2025 | 24 | 30 |
| 2026 | 9 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual fuel selector switch8 Sep 2026US 12,729,655 B2Champion Power Equipment, Inc.
- Dual fuel selector switch1 Sep 2026US 12,723,549 B2Champion Power Equipment, Inc.
- Method for operating an internal combustion engine28 Apr 2026US 12,612,879 B2Innio Jenbacher GmbH & Co OG
- Fuel system for a spark ignition engine21 Apr 2026US 12,607,150 B2Fpt Industrial S.P.A.
- Systems for a multi-fuel capable engine10 Feb 2026US 12,546,266 B2Transportation IP Holdings, LLC
- Multi-fuel engine system and method for controlling same8 Oct 2026US 2026/0309102 A1Hd Hyundai Heavy Industries Co., Ltd.
- Multi-stage emission system for large displacement compression ignition non-road diesel, diesel-natural gas or alternative fuel mixture generator systems for emergency and non-emergency stationary power applications17 Sep 2026US 2026/0275892 A1Bluefin ESI, Inc.
- Fuel system that prevents vapor lock in powertrains converted to run on a volatile alternative fuel20 Aug 2026US 2026/0243218 A1ICOM North America LLC
- Fuel type detection for internal combustion engine6 Aug 2026US 2026/0226868 A1Caterpillar Inc.
- Fueling system controls including detection of valve fully open condition16 Jul 2026US 2026/0201846 A1Cummins Inc.
Most cited
By later US patents
- Methods and apparatus for operation of multiple fuel engines199US 7,222,015 B2Engine Control Technology, LLC · 2007
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines180US 10,287,943 B1Clean Power Technologies, LLC · 2019
- Dual fuel supply system for a direct-injection system of a diesel engine with on-board mixing169US 8,973,560 B2Dgc Industries Pty Ltd · 2015
- Dual fuel system for an internal combustion engine167US 9,212,643 B2Delia Ltd. · 2015