C10N 2040/253
Small diesel engines
Official title: {Small diesel engines}
C10N2040/253 (Small diesel engines) appears on 678 US grants and 256 published applications in this corpus.
Search patents in C10N- Granted patents
- 678
- Published applications
- 256
- Assignees
- 113
- Inventors
- 836
- Latest grant
- 10 Mar 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 | 16 | 0 |
| 1982 | 7 | 0 |
| 1983 | 11 | 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 | 28 | 0 |
| 1993 | 46 | 0 |
| 1994 | 57 | 0 |
| 1995 | 24 | 0 |
| 1996 | 22 | 0 |
| 1997 | 33 | 0 |
| 1998 | 27 | 0 |
| 1999 | 12 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 5 |
| 2002 | 14 | 15 |
| 2003 | 15 | 11 |
| 2004 | 5 | 6 |
| 2005 | 2 | 5 |
| 2006 | 1 | 9 |
| 2007 | 1 | 7 |
| 2008 | 0 | 15 |
| 2009 | 2 | 12 |
| 2010 | 7 | 11 |
| 2011 | 8 | 13 |
| 2012 | 3 | 9 |
| 2013 | 9 | 22 |
| 2014 | 9 | 13 |
| 2015 | 9 | 13 |
| 2016 | 11 | 12 |
| 2017 | 7 | 21 |
| 2018 | 7 | 11 |
| 2019 | 12 | 18 |
| 2020 | 11 | 10 |
| 2021 | 8 | 7 |
| 2022 | 3 | 2 |
| 2023 | 6 | 3 |
| 2024 | 2 | 2 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lubricating oil composition, diesel engine with mounted supercharger, and use method for lubricating oil composition10 Mar 2026US 12,570,921 B2Idemitsu Kosan Co., Ltd.
- Method for reduction of abnormal combustion events13 Jan 2026US 12,522,779 B2Infineum International Limited
- Lubricating oil compositions comprising a polyalphaolefin10 Jun 2025US 12,325,837 B2Chevron Oronite Technology B.V.
- Lubricating oil compositions24 Sep 2024US 12,098,342 B2
- Use of nitrogen compounds quaternised with alkylene oxide and hydrocarbyl-substituted polycarboxylic acid as additives in fuels and lubricants27 Feb 2024US 11,912,950 B2BASF SE
- Lubricant compositions and methods of lubricating internal combustion engines4 Jun 2026US 2026/0152698 A1The Lubrizol Corporation
- Lubricating oil compositions with improved wear performance and soot dispersancy27 Nov 2025US 2025/0361459 A1Infineum International Limited
- Lubricant Compositions Comprising Core-Shell Colloidal Zn-Containing Particles21 Aug 2025US 2025/0263623 A1
- Lubricating oil compositions with improved wear performance and engine cleanliness27 Mar 2025US 2025/0101334 A1Infineum International Limited
- Method for Reduction of Abnormal Combustion Events4 Jul 2024US 2024/0218284 A1Infineum International Limited
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
- Metal-containing lubricant compositions90US 4,767,551 AAmoco Corporation · 1988