F02D 19/0652
Biofuels
Official title: {Biofuels, e.g. plant oils}
F02D19/0652 (Biofuels) appears on 291 US grants and 326 published applications in this corpus.
Search patents in F02D- Granted patents
- 291
- Published applications
- 326
- Assignees
- 148
- Inventors
- 538
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 3 |
| 2003 | 0 | 0 |
| 2004 | 2 | 2 |
| 2005 | 1 | 6 |
| 2006 | 1 | 6 |
| 2007 | 5 | 17 |
| 2008 | 8 | 13 |
| 2009 | 9 | 25 |
| 2010 | 18 | 29 |
| 2011 | 21 | 27 |
| 2012 | 11 | 14 |
| 2013 | 17 | 23 |
| 2014 | 20 | 22 |
| 2015 | 17 | 19 |
| 2016 | 11 | 13 |
| 2017 | 10 | 12 |
| 2018 | 11 | 7 |
| 2019 | 8 | 8 |
| 2020 | 13 | 8 |
| 2021 | 14 | 10 |
| 2022 | 7 | 8 |
| 2023 | 14 | 13 |
| 2024 | 17 | 14 |
| 2025 | 17 | 15 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Engine control system for intake valve opening timing during cold start11 Aug 2026US 12,704,099 B2Cummins Power Generation Inc.
- Asymmetric fuel injection window and fuel metering window17 Mar 2026US 12,577,918 B2Caterpillar Inc.
- Systems and methods for monitoring nitrogen dioxide variability in an engine aftertreatment system10 Feb 2026US 12,546,242 B1Caterpillar Inc.
- Systems and methods for at-cylinder fuel switching27 Jan 2026US 12,535,041 B2Caterpillar Inc.
- Coolant system bypass for engine6 Jan 2026US 12,516,622 B1Caterpillar Inc.
- Method and Apparatus for Non-Fossil Fuel Internal Combustion Engine27 Aug 2026US 2026/0251112 A1MayMaan Research, LLC
- Fuel type detection for internal combustion engine6 Aug 2026US 2026/0226868 A1Caterpillar Inc.
- A fuel mixture for operating an internal combustion engine2 Jul 2026US 2026/0185493 A1WäRtsilä Finland Oy
- Engine system, fuel vaporization system, and method for vaporizing a secondary liquid fuel7 May 2026US 2026/0126022 A1Cummins Power Generation Inc.
- Dual fuel injector for injection control and fuel metering, and method for operating same7 May 2026US 2026/0126025 A1Caterpillar Inc.
Most cited
By later US patents
- Multiple fuel supply system for an internal combustion engine164US 4,031,864 AThe United States of America as represented by the United States Energy Research and Development Administration · 1977
- Operation control system for internal combustion engine138US 4,993,386 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1991
- Optimized fuel management system for direct injection ethanol enhancement of gasoline engines129US 7,225,787 B2Massachusetts Institute of Technology · 2007
- Dual fuel supply system and method for an internal combustion engine116US 4,402,296 A1983
- Fuel storage and delivey apparatus of a multi-fuel engine and process78US 5,560,344 ACaterpillar Inc. · 1996