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C10N 2040/25

Internal-combustion engines

C10N2040/25 (Internal-combustion engines) appears on 3,097 US grants and 2,822 published applications in this corpus.

Search patents in C10N

Granted patents: 3,097
Published applications: 2,822
Assignees: 576
Inventors: 4,107
Latest grant: 6 Oct 2026

Filings by year

C10N 2040/25: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	21	0
1977	17	0
1978	28	0
1979	38	0
1980	27	0
1981	31	0
1982	16	0
1983	21	0
1984	19	0
1985	33	0
1986	30	0
1987	51	0
1988	53	0
1989	71	0
1990	77	0
1991	70	0
1992	74	0
1993	83	0
1994	117	0
1995	62	0
1996	64	0
1997	79	0
1998	77	0
1999	66	0
2000	56	0
2001	48	13
2002	39	41
2003	56	72
2004	37	94
2005	24	75
2006	20	103
2007	32	89
2008	27	121
2009	40	102
2010	75	126
2011	85	120
2012	73	119
2013	92	140
2014	98	162
2015	92	139
2016	121	166
2017	98	161
2018	94	170
2019	106	187
2020	109	132
2021	114	93
2022	86	90
2023	71	87
2024	63	86
2025	74	82
2026	42	52

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

Recent patents

Magnesium sulfonate detergent having improved compatibility with friction modifiers6 Oct 2026US 12,753,362 B2Afton Chemical Corporation
Lubricating oil compositions with improved wear performance and soot dispersancy6 Oct 2026US 12,753,363 B2Infineum International Limited
Lubricant compositions for reduced pre-ignition in hydrogen fueled engines29 Sep 2026US 12,747,407 B2Infineum International Limited
Lubricant compositions containing magnesium detergent for reduced pre-ignition in hydrogen fueled engines15 Sep 2026US 12,735,654 B2Infineum International Limited
Lubricant compositions containing molybdenum for reduced pre-ignition in hydrogen fueled engines1 Sep 2026US 12,723,212 B2Infineum International Limited

Most cited

By later US patents