F02D 19/08
Simultaneously using pluralities of fuels
Official title: simultaneously using pluralities of fuels (F02D19/12 takes precedence)
F02D19/08 (Simultaneously using pluralities of fuels) appears on 1,753 US grants and 1,795 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,753
- Published applications
- 1,795
- Assignees
- 456
- Inventors
- 2,607
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 11 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 21 | 0 |
| 1991 | 18 | 0 |
| 1992 | 22 | 0 |
| 1993 | 32 | 0 |
| 1994 | 16 | 0 |
| 1995 | 15 | 0 |
| 1996 | 15 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 21 | 0 |
| 2000 | 20 | 0 |
| 2001 | 16 | 1 |
| 2002 | 15 | 21 |
| 2003 | 16 | 19 |
| 2004 | 19 | 30 |
| 2005 | 20 | 30 |
| 2006 | 30 | 32 |
| 2007 | 37 | 59 |
| 2008 | 45 | 84 |
| 2009 | 38 | 119 |
| 2010 | 83 | 124 |
| 2011 | 83 | 113 |
| 2012 | 84 | 104 |
| 2013 | 82 | 111 |
| 2014 | 84 | 131 |
| 2015 | 95 | 131 |
| 2016 | 100 | 106 |
| 2017 | 103 | 79 |
| 2018 | 76 | 68 |
| 2019 | 69 | 89 |
| 2020 | 87 | 59 |
| 2021 | 81 | 54 |
| 2022 | 45 | 36 |
| 2023 | 59 | 52 |
| 2024 | 49 | 43 |
| 2025 | 54 | 58 |
| 2026 | 20 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Injectors, methods, and systems for dual fuel combustion22 Sep 2026US 12,742,428 B2
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture7 Jul 2026US 12,674,409 B2Climate Energy Investments, LLC
- Engine7 Jul 2026US 12,674,431 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Radial cam engine23 Jun 2026US 12,662,941 B2
- Fuel system having dual fuel quill connector and quill connector installation method26 May 2026US 12,637,994 B2Caterpillar Inc.
- Multi-fuel engine system and method for controlling same8 Oct 2026US 2026/0309102 A1Hd Hyundai Heavy Industries Co., Ltd.
- Controller and control method1 Oct 2026US 2026/0298166 A1Toyota Jidosha Kabushiki Kaisha
- Control device and method for internal combustion engine17 Sep 2026US 2026/0275923 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Improvements relating to internal combustion engines3 Sep 2026US 2026/0258758 A1Commonwealth Scientific and Industrial Research Organisation
- Method and Apparatus for Non-Fossil Fuel Internal Combustion Engine27 Aug 2026US 2026/0251112 A1MayMaan Research, LLC
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
- 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