F02D 19/0634
Determining a density, viscosity, composition or concentration
Official title: {Determining a density, viscosity, composition or concentration (F02D19/087 takes precedence)}
F02D19/0634 (Determining a density, viscosity, composition or concentration) appears on 234 US grants and 244 published applications in this corpus.
Search patents in F02D- Granted patents
- 234
- Published applications
- 244
- Assignees
- 115
- Inventors
- 517
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 0 |
| 2002 | 6 | 8 |
| 2003 | 6 | 7 |
| 2004 | 5 | 7 |
| 2005 | 4 | 6 |
| 2006 | 6 | 5 |
| 2007 | 3 | 13 |
| 2008 | 8 | 11 |
| 2009 | 11 | 16 |
| 2010 | 10 | 16 |
| 2011 | 6 | 12 |
| 2012 | 5 | 8 |
| 2013 | 12 | 14 |
| 2014 | 13 | 8 |
| 2015 | 8 | 11 |
| 2016 | 7 | 13 |
| 2017 | 16 | 19 |
| 2018 | 10 | 19 |
| 2019 | 14 | 9 |
| 2020 | 17 | 6 |
| 2021 | 9 | 9 |
| 2022 | 9 | 4 |
| 2023 | 2 | 3 |
| 2024 | 3 | 5 |
| 2025 | 6 | 6 |
| 2026 | 5 | 9 |
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.
- Engine system and method for determining fuel characteristics12 May 2026US 12,624,668 B2Caterpillar 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.
- Dual fuel engine combustion control strategy optimizing pilot shot quantities6 Jan 2026US 12,516,638 B2Caterpillar Inc.
- Improvements relating to internal combustion engines3 Sep 2026US 2026/0258758 A1Commonwealth Scientific and Industrial Research Organisation
- Mixed-combustion electronic control device6 Aug 2026US 2026/0226867 A1Hitachi, Ltd.
- A fuel mixture for operating an internal combustion engine2 Jul 2026US 2026/0185493 A1WäRtsilä Finland Oy
- System and method for controlling fuel substitution in a dual fuel engine system30 Apr 2026US 2026/0117716 A1Cummins Power Generation Inc.
- Engine control system and methods16 Apr 2026US 2026/0104015 A1Innio Waukesha Gas Engines Inc.
Most cited
By later US patents
- Control system for two cycle direct injection engine and the method thereof165US 6,158,411 AFuji Jukogyo Kabushiki Kaisha · 2000
- Knocking control system and method for internal combustion engine using multiple fuels120US 6,951,202 B2Toyota Jidosha Kabushiki Kaisha · 2005
- Fuel composition supply means for spark ignition engines77US 7,107,942 B2ExxonMobil Research and Engineering Company · 2006
- Fuel composition supply means for driving cycle conditions in spark ignition engines66US 6,622,663 B2ExxonMobil Research and Engineering Company · 2003
- Method and apparatus for mixing liquids64US 4,452,265 A1984