C10N 2040/252
Diesel engines
Official title: {Diesel engines}
C10N2040/252 (Diesel engines) appears on 1,112 US grants and 970 published applications in this corpus.
Search patents in C10N- Granted patents
- 1,112
- Published applications
- 970
- Assignees
- 214
- Inventors
- 1,647
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 11 | 0 |
| 1978 | 23 | 0 |
| 1979 | 16 | 0 |
| 1980 | 12 | 0 |
| 1981 | 17 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 12 | 0 |
| 1988 | 22 | 0 |
| 1989 | 26 | 0 |
| 1990 | 31 | 0 |
| 1991 | 31 | 0 |
| 1992 | 29 | 0 |
| 1993 | 46 | 0 |
| 1994 | 57 | 0 |
| 1995 | 25 | 0 |
| 1996 | 22 | 0 |
| 1997 | 33 | 0 |
| 1998 | 28 | 0 |
| 1999 | 12 | 0 |
| 2000 | 14 | 0 |
| 2001 | 18 | 6 |
| 2002 | 15 | 19 |
| 2003 | 20 | 31 |
| 2004 | 14 | 45 |
| 2005 | 11 | 26 |
| 2006 | 10 | 39 |
| 2007 | 11 | 40 |
| 2008 | 11 | 54 |
| 2009 | 15 | 39 |
| 2010 | 30 | 46 |
| 2011 | 39 | 42 |
| 2012 | 16 | 54 |
| 2013 | 34 | 51 |
| 2014 | 30 | 56 |
| 2015 | 35 | 52 |
| 2016 | 38 | 53 |
| 2017 | 33 | 54 |
| 2018 | 28 | 41 |
| 2019 | 45 | 64 |
| 2020 | 35 | 37 |
| 2021 | 35 | 29 |
| 2022 | 21 | 24 |
| 2023 | 20 | 14 |
| 2024 | 11 | 17 |
| 2025 | 13 | 18 |
| 2026 | 9 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lubricating oil compositions with improved wear performance and soot dispersancy6 Oct 2026US 12,753,363 B2Infineum International Limited
- Lubricant compositions providing robust valvetrain wear protection in the ford 6.7L engine test1 Sep 2026US 12,723,215 B2Infineum International Limited
- Furan based compositions and methods of making thereof11 Aug 2026US 12,703,689 B2University of Delaware
- 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
- Marine diesel engine lubricating oil compositions3 Sep 2026US 2026/0258316 A1Chevron Oronite Company LLC
- Aftertreatment system friendly engine oil formulation3 Sep 2026US 2026/0258317 A1Chevron Oronite Company LLC
- Deposit control compounds for lubricating compositions27 Aug 2026US 2026/0250594 A1The Lubrizol Corporation
- Aftertreatment system friendly engine oil formulation20 Aug 2026US 2026/0242687 A1Chevron Oronite Company LLC
- Lubricant component selections for reduced engine sludge20 Aug 2026US 2026/0242688 A1Afton Chemical Corporation
Most cited
By later US patents
- Ashless dispersants formed from substituted acylating agents and their production and use115US 5,241,003 AEthyl Petroleum Additives, Inc. · 1993
- Modified high molecular weight succinimides114US 5,334,321 AChevron Research and Technology Company, a Division of Chevron U.S.A. Inc. · 1994
- Lubricating oil compositions and concentrates and the use thereof108US 5,652,201 AEthyl Petroleum Additives, Inc. · 1997
- Sulfurized compositions102US 4,119,549 AThe Lubrizol Corporation · 1978
- Acid neutralizing filter canister91US 6,919,023 B2Baldwin Filters, Inc. · 2005