F01L 3/22
Valve-seats not provided for in preceding subgroups of this group
Official title: Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
F01L3/22 (Valve-seats not provided for in preceding subgroups of this group) appears on 228 US grants and 137 published applications in this corpus.
Search patents in F01L- Granted patents
- 228
- Published applications
- 137
- Assignees
- 116
- Inventors
- 478
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 10 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 7 | 0 |
| 1997 | 16 | 0 |
| 1998 | 19 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 4 |
| 2003 | 5 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 3 |
| 2008 | 3 | 5 |
| 2009 | 2 | 4 |
| 2010 | 2 | 9 |
| 2011 | 3 | 5 |
| 2012 | 3 | 9 |
| 2013 | 5 | 8 |
| 2014 | 4 | 5 |
| 2015 | 2 | 7 |
| 2016 | 4 | 12 |
| 2017 | 2 | 3 |
| 2018 | 5 | 4 |
| 2019 | 5 | 11 |
| 2020 | 10 | 17 |
| 2021 | 15 | 11 |
| 2022 | 9 | 2 |
| 2023 | 1 | 3 |
| 2024 | 4 | 3 |
| 2025 | 0 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas exchange valve for an internal combustion engine and internal combustion engine16 Jun 2026US 12,655,778 B2Everllence SE
- Plasma electrolytic polished diesel engine components21 Apr 2026US 12,606,930 B2Cummins Inc.
- Air intake for a lean-burn gasoline engine10 Sep 2024US 12,084,995 B2Jaguar Land Rover Limited
- Cylinder head for an internal combustion engine10 Sep 2024US 12,085,037 B2Innio Jenbacher GmbH & Co OG
- Plasma electrolytic polished diesel engine components14 May 2024US 11,982,011 B2Cummins Inc.
- Internal combustion engines and cylinder heads configured for in-cylinder pressure sensors12 Mar 2026US 2026/0071570 A1Cummins Inc.
- Method of manufacturing nitrided valve seat insert with supersaturated nitrogen surface layer and product thereof5 Mar 2026US 2026/0062786 A1L. E. Jones Company
- Multi-composition thermal management coating systems for combustion chamber components26 Feb 2026US 2026/0055714 A1Cummins Inc.
- Cylinder head offset chamfer design10 Apr 2025US 2025/0116241 A1Cummins Inc.
- Plasma electrolytic polished diesel engine components14 Nov 2024US 2024/0376628 A1Cummins Inc.
Most cited
By later US patents
- Marine hulls and drives97US 7,984,684 B22011
- Harmonic engine70US 7,603,858 B2Lawrence Livermore National Security, LLC · 2009
- Valve seat insert and cylinder head with the valve seat insert69US 4,763,876 ANGK Insulators, Ltd. · 1988
- Valve seat insert58US 4,676,482 ARexnord Inc. · 1987
- Valve seat arrangement49US 5,020,490 AAisin Seiki Kabushiki Kaisha · 1991