C10N 2040/251
Alcohol-fuelled engines
Official title: {Alcohol-fuelled engines}
C10N2040/251 (Alcohol-fuelled engines) appears on 1,203 US grants and 115 published applications in this corpus.
Search patents in C10N- Granted patents
- 1,203
- Published applications
- 115
- Assignees
- 183
- Inventors
- 1,193
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 11 | 0 |
| 1979 | 21 | 0 |
| 1980 | 12 | 0 |
| 1981 | 15 | 0 |
| 1982 | 11 | 0 |
| 1983 | 13 | 0 |
| 1984 | 12 | 0 |
| 1985 | 28 | 0 |
| 1986 | 28 | 0 |
| 1987 | 45 | 0 |
| 1988 | 50 | 0 |
| 1989 | 67 | 0 |
| 1990 | 72 | 0 |
| 1991 | 65 | 0 |
| 1992 | 68 | 0 |
| 1993 | 74 | 0 |
| 1994 | 107 | 0 |
| 1995 | 55 | 0 |
| 1996 | 55 | 0 |
| 1997 | 71 | 0 |
| 1998 | 68 | 0 |
| 1999 | 59 | 0 |
| 2000 | 43 | 0 |
| 2001 | 35 | 8 |
| 2002 | 27 | 27 |
| 2003 | 26 | 13 |
| 2004 | 10 | 6 |
| 2005 | 3 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 1 | 5 |
| 2012 | 1 | 4 |
| 2013 | 5 | 9 |
| 2014 | 3 | 9 |
| 2015 | 6 | 3 |
| 2016 | 5 | 5 |
| 2017 | 4 | 3 |
| 2018 | 3 | 5 |
| 2019 | 2 | 4 |
| 2020 | 3 | 2 |
| 2021 | 3 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods of improving the performance of combustion engine after-treatment devices21 Oct 2025US 12,448,582 B2Afton Chemical Corporation
- Friction and wear reduction additives13 May 2025US 12,297,400 B2Petroliam Nasional Berhad (Petronas)
- Friction and wear reduction additives27 Feb 2024US 11,912,953 B2Petroliam Nasional Berhad (Petronas)
- Polymeric surfactants for improved emulsion and flow properties at low temperatures21 Feb 2023US 11,584,898 B2Afton Chemical Corporation
- Aliphatic tetrahedral borate compounds for lubricating compositions4 Oct 2022US 11,459,520 B2The Lubrizol Corporation
- Methods of improving the performance of combustion engine after-treatment devices10 Oct 2024US 2024/0336862 A1Afton Chemical Corporation
- Friction and wear reduction additives3 Oct 2024US 2024/0327743 A1Petroliam Nasional Berhad (Petronas)
- Lubricating composition and method of lubricating an internal combustion engine19 Oct 2023US 2023/0332065 A1The Lubrizol Corporation
- Friction and wear reduction additives15 Sep 2022US 2022/0290067 A1Petroliam Nasional Berhad (Petronas)
- Polymeric Surfactants for Improved Emulsion and Flow Properties at Low Temperatures17 Feb 2022US 2022/0049180 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