F01L 3/02
Selecting particular materials for valve-members or valve-seats
Official title: Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
F01L3/02 (Selecting particular materials for valve-members or valve-seats) appears on 479 US grants and 395 published applications in this corpus.
Search patents in F01L- Granted patents
- 479
- Published applications
- 395
- Assignees
- 209
- Inventors
- 1,018
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 10 | 0 |
| 2001 | 19 | 9 |
| 2002 | 20 | 16 |
| 2003 | 20 | 12 |
| 2004 | 9 | 12 |
| 2005 | 8 | 7 |
| 2006 | 3 | 17 |
| 2007 | 8 | 16 |
| 2008 | 3 | 8 |
| 2009 | 7 | 11 |
| 2010 | 10 | 8 |
| 2011 | 5 | 17 |
| 2012 | 5 | 6 |
| 2013 | 7 | 15 |
| 2014 | 17 | 15 |
| 2015 | 12 | 26 |
| 2016 | 14 | 28 |
| 2017 | 19 | 20 |
| 2018 | 13 | 25 |
| 2019 | 26 | 25 |
| 2020 | 27 | 26 |
| 2021 | 21 | 29 |
| 2022 | 22 | 14 |
| 2023 | 18 | 15 |
| 2024 | 15 | 10 |
| 2025 | 10 | 5 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas exchange valve for an internal combustion engine and internal combustion engine16 Jun 2026US 12,655,778 B2Everllence SE
- Tapered engine exhaust valve12 May 2026US 12,624,650 B2Caterpillar Inc.
- Sliding member and internal combustion engine7 Apr 2026US 12,595,754 B2Fukuda Metal Foil & Powder Co., Ltd.
- Sliding member and internal combustion engine provided with sliding member17 Mar 2026US 12,577,643 B2Fukuda Metal Foil & Powder Co., Ltd.
- Sliding member27 Jan 2026US 12,535,020 B2
- 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.
- Air-cooled, four-stroke aviation engine22 Jan 2026US 2026/0022676 A1Textron Innovations Inc.
- Applicator for semi-fluid materials25 Dec 2025US 2025/0389212 A1Innio Waukesha Gas Engines Inc.
- Tapered engine exhaust valve20 Nov 2025US 2025/0354504 A1Caterpillar Inc.
Most cited
By later US patents