F01L 3/08
Valves guides
Official title: Valves guides; Sealing of valve stem, e.g. sealing by lubricant
F01L3/08 (Valves guides) appears on 328 US grants and 258 published applications in this corpus.
Search patents in F01L- Granted patents
- 328
- Published applications
- 258
- Assignees
- 145
- Inventors
- 546
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 14 | 1 |
| 2002 | 7 | 6 |
| 2003 | 9 | 9 |
| 2004 | 8 | 10 |
| 2005 | 8 | 9 |
| 2006 | 5 | 10 |
| 2007 | 4 | 9 |
| 2008 | 6 | 4 |
| 2009 | 3 | 11 |
| 2010 | 3 | 6 |
| 2011 | 8 | 9 |
| 2012 | 2 | 9 |
| 2013 | 7 | 19 |
| 2014 | 12 | 9 |
| 2015 | 11 | 13 |
| 2016 | 12 | 19 |
| 2017 | 11 | 14 |
| 2018 | 13 | 17 |
| 2019 | 12 | 16 |
| 2020 | 14 | 13 |
| 2021 | 11 | 13 |
| 2022 | 11 | 8 |
| 2023 | 8 | 7 |
| 2024 | 7 | 8 |
| 2025 | 8 | 5 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Internal combustion engine22 Sep 2026US 12,742,404 B2Toyota Jidosha Kabushiki Kaisha
- Gas exchange valve for an internal combustion engine and internal combustion engine16 Jun 2026US 12,655,778 B2Everllence SE
- Sliding member and internal combustion engine7 Apr 2026US 12,595,754 B2Fukuda Metal Foil & Powder Co., Ltd.
- Poppet valve24 Feb 2026US 12,560,110 B2Eaton Intelligent Power Limited
- Corrosion and wear resistant overlay, method for forming corrosion and wear resistant overlay, and corrosion and wear resistant valve23 Dec 2025US 12,502,727 B2Hitachi-GE Nuclear Energy, Ltd.
- Hydrogen combustion engine valve sealing25 Jun 2026US 2026/0176990 A1DAF Trucks N. V.
- Valve guide for guiding a valve stem11 Jun 2026US 2026/0160190 A1
- Internal combustion engine22 Jan 2026US 2026/0022648 A1Toyota Jidosha Kabushiki Kaisha
- 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.
Most cited
By later US patents
- Internal combustion engine83US 6,279,550 B12001
- Cold air super-charged internal combustion engine, working cycle and method69US 6,951,211 B22005
- Rocker arm assembly and components therefor47US 8,915,225 B2Eaton Corporation · 2014
- Iron-chromium alloy with improved compressive yield strength and method of making and use thereof43US 8,479,700 B2L. E. Jones Company · 2013
- Sensing and control of a variable valve actuation system43US 8,985,074 B2Eaton Corporation · 2015