C10N 2040/255
Gasoline engines
Official title: {Gasoline engines}
C10N2040/255 (Gasoline engines) appears on 1,672 US grants and 736 published applications in this corpus.
Search patents in C10N- Granted patents
- 1,672
- Published applications
- 736
- Assignees
- 288
- Inventors
- 2,044
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 15 | 0 |
| 1978 | 19 | 0 |
| 1979 | 27 | 0 |
| 1980 | 20 | 0 |
| 1981 | 20 | 0 |
| 1982 | 13 | 0 |
| 1983 | 14 | 0 |
| 1984 | 14 | 0 |
| 1985 | 29 | 0 |
| 1986 | 28 | 0 |
| 1987 | 47 | 0 |
| 1988 | 52 | 0 |
| 1989 | 67 | 0 |
| 1990 | 73 | 0 |
| 1991 | 68 | 0 |
| 1992 | 70 | 0 |
| 1993 | 78 | 0 |
| 1994 | 114 | 0 |
| 1995 | 61 | 0 |
| 1996 | 61 | 0 |
| 1997 | 76 | 0 |
| 1998 | 73 | 0 |
| 1999 | 66 | 0 |
| 2000 | 46 | 0 |
| 2001 | 41 | 9 |
| 2002 | 33 | 31 |
| 2003 | 36 | 20 |
| 2004 | 13 | 29 |
| 2005 | 6 | 15 |
| 2006 | 4 | 25 |
| 2007 | 8 | 14 |
| 2008 | 5 | 29 |
| 2009 | 7 | 15 |
| 2010 | 13 | 21 |
| 2011 | 17 | 30 |
| 2012 | 9 | 32 |
| 2013 | 20 | 34 |
| 2014 | 19 | 35 |
| 2015 | 20 | 40 |
| 2016 | 25 | 44 |
| 2017 | 19 | 56 |
| 2018 | 21 | 60 |
| 2019 | 41 | 62 |
| 2020 | 32 | 27 |
| 2021 | 32 | 27 |
| 2022 | 23 | 30 |
| 2023 | 24 | 18 |
| 2024 | 13 | 14 |
| 2025 | 18 | 11 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lubricant compositions providing robust valvetrain wear protection in the ford 6.7L engine test1 Sep 2026US 12,723,215 B2Infineum International Limited
- Lubricating oil viscosity index improver and lubricating oil composition containing the same30 Jun 2026US 12,668,757 B2DL Chemical CO., LTD.
- Lubricating oil compositions and use thereof for improving journal bearing durability in internal combustion engines2 Jun 2026US 12,644,067 B2Infineum International Limited
- Method for reduction of abnormal combustion events13 Jan 2026US 12,522,779 B2Infineum International Limited
- Additives with high sulfurization for lubricating oil compositions28 Oct 2025US 12,454,656 B2Afton Chemical Corporation
- Viscosity index improver composition and lubricating oil composition20 Aug 2026US 2026/0242690 A1Sanyo Chemical Industries, Ltd.
- Turbocharged engine oil compositions and related methods18 Jun 2026US 2026/0167886 A1ExxonMobil Technology and Engineering Company
- Lubricant compositions and methods of lubricating internal combustion engines4 Jun 2026US 2026/0152698 A1The Lubrizol Corporation
- Lubricating oil compositions14 May 2026US 2026/0132352 A1
- Lubricating fluid for internal combustion engines fueled with alternative combustion fuels having high auto-ignition temperatures30 Apr 2026US 2026/0117142 A1Afton Chemical Corporation
Most cited
By later US patents
- Lubricating composition228US 4,956,122 AUniroyal Chemical Company, Inc. · 1990
- Video device synchronization system190US 4,532,547 AAmpex Corporation · 1985
- Modified succinimides173US 4,612,132 AChevron Research Company · 1986
- Novel VI improver, dispersant, and anti-oxidant additive and lubricating oil composition containing same122US 4,863,623 ATexaco Inc. · 1989
- Oil filter containing an oil soluble thermoplastic additive material therein116US 5,591,330 AT/F Purifiner, Inc. · 1997