F02D 19/0657
Heavy or light fuel oils
Official title: {Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships}
F02D19/0657 (Heavy or light fuel oils) appears on 60 US grants and 54 published applications in this corpus.
Search patents in F02D- Granted patents
- 60
- Published applications
- 54
- Assignees
- 41
- Inventors
- 145
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 3 | 4 |
| 2010 | 1 | 2 |
| 2011 | 3 | 2 |
| 2012 | 2 | 1 |
| 2013 | 2 | 3 |
| 2014 | 1 | 0 |
| 2015 | 1 | 8 |
| 2016 | 1 | 1 |
| 2017 | 3 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 6 |
| 2021 | 7 | 4 |
| 2022 | 5 | 3 |
| 2023 | 4 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 5 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for supplying VOC as fuel for engine and vessel using VOC as fuel13 May 2025US 12,297,786 B2Hanwha Ocean Co., Ltd.
- Dual fuel engine system having fuel-actuated unit pumps and method25 Feb 2025US 12,234,782 B1Caterpillar Inc.
- Heating value estimation30 Jan 2024US 11,885,276 B2WäRtsilä Finland Oy
- Apparatus for reducing greenhouse gas emission in vessel and vessel including the same26 Dec 2023US 11,852,062 B2Daewoo Shipbuilding & Marine Engineering Co., Ltd.
- Engine26 Sep 2023US 11,767,798 B2Yanmar Power Technology 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.
- Engine device18 Sep 2025US 2025/0290456 A1Yanmar Holdings Co., Ltd.
- Ammonia mixed combustion engine18 Sep 2025US 2025/0290457 A1Yanmar Holdings Co., Ltd.
- Dual fuel engine system22 May 2025US 2025/0163847 A1Shell USA, Inc.
- System for supplying voc as fuel for engine and vessel using voc as fuel6 Mar 2025US 2025/0075666 A1Hanwha Ocean Co., Ltd.
Most cited
By later US patents
- Waste oil management system102US 5,336,396 A1994
- Method and apparatus for mixing liquids64US 4,452,265 A1984
- Dual fuel engine which ignites a homogeneous mixture of gaseous fuel, air, and pilot fuel45US 6,032,617 ACaterpillar Inc. · 2000
- Fuel injector system36US 4,782,794 AGeneral Electric Company · 1988
- Process and unit for operating a combustion engine aboard ships24US 4,471,744 A1984