F02D 19/0649
Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane
Official title: {Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers}
F02D19/0649 (Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane) appears on 577 US grants and 618 published applications in this corpus.
Search patents in F02D- Granted patents
- 577
- Published applications
- 618
- Assignees
- 233
- Inventors
- 1,112
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 2 |
| 2002 | 5 | 11 |
| 2003 | 4 | 11 |
| 2004 | 9 | 10 |
| 2005 | 9 | 17 |
| 2006 | 14 | 16 |
| 2007 | 8 | 30 |
| 2008 | 18 | 24 |
| 2009 | 19 | 41 |
| 2010 | 28 | 41 |
| 2011 | 34 | 42 |
| 2012 | 19 | 21 |
| 2013 | 25 | 39 |
| 2014 | 22 | 38 |
| 2015 | 37 | 37 |
| 2016 | 22 | 25 |
| 2017 | 24 | 27 |
| 2018 | 23 | 19 |
| 2019 | 27 | 29 |
| 2020 | 24 | 18 |
| 2021 | 26 | 19 |
| 2022 | 17 | 17 |
| 2023 | 23 | 20 |
| 2024 | 25 | 17 |
| 2025 | 22 | 27 |
| 2026 | 10 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel agnostic compression ignition engine18 Aug 2026US 12,710,015 B2Climate Energy Investments, LLC
- Engine control system for intake valve opening timing during cold start11 Aug 2026US 12,704,099 B2Cummins Power Generation Inc.
- System and method of adding gaseous oxygen additive derived from an oxygen concentrator to diesel fuel to improve combustion21 Jul 2026US 12,687,143 B2H2Diesel, 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.
- 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.
- 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
- System and method of adding gaseous oxygen additive derived from an oxygen concentrator to diesel fuel to improve combustion11 Jun 2026US 2026/0160223 A1H2Diesel, Inc.
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Dual fuel system for an internal combustion engine167US 9,212,643 B2Delia Ltd. · 2015
- 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
- Premixed charge compression ignition engine with optimal combustion control152US 6,230,683 B1Cummins Engine Company, Inc. · 2001
- Premixed charge compression ignition engine with optimal combustion control139US 6,286,482 B1Cummins Engine Company, Inc. · 2001