F01L 1/02
Valve drive
Official title: Valve drive (transmitting-gear between valve drive and valve F01L1/12)
F01L1/02 (Valve drive) appears on 4,398 US grants and 3,931 published applications in this corpus.
Search patents in F01L- Granted patents
- 4,398
- Published applications
- 3,931
- Assignees
- 709
- Inventors
- 5,833
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 27 | 0 |
| 1986 | 37 | 0 |
| 1987 | 45 | 0 |
| 1988 | 47 | 0 |
| 1989 | 49 | 0 |
| 1990 | 49 | 0 |
| 1991 | 52 | 0 |
| 1992 | 54 | 0 |
| 1993 | 52 | 0 |
| 1994 | 38 | 0 |
| 1995 | 35 | 0 |
| 1996 | 50 | 0 |
| 1997 | 56 | 0 |
| 1998 | 66 | 0 |
| 1999 | 56 | 0 |
| 2000 | 50 | 0 |
| 2001 | 105 | 42 |
| 2002 | 115 | 120 |
| 2003 | 123 | 143 |
| 2004 | 126 | 171 |
| 2005 | 155 | 224 |
| 2006 | 153 | 165 |
| 2007 | 145 | 220 |
| 2008 | 138 | 181 |
| 2009 | 102 | 198 |
| 2010 | 140 | 184 |
| 2011 | 138 | 144 |
| 2012 | 134 | 132 |
| 2013 | 143 | 128 |
| 2014 | 146 | 138 |
| 2015 | 124 | 152 |
| 2016 | 124 | 209 |
| 2017 | 162 | 319 |
| 2018 | 229 | 252 |
| 2019 | 280 | 207 |
| 2020 | 253 | 187 |
| 2021 | 166 | 145 |
| 2022 | 138 | 118 |
| 2023 | 88 | 51 |
| 2024 | 78 | 50 |
| 2025 | 48 | 31 |
| 2026 | 20 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cylinder head cover, and method for installing a cylinder head cover8 Sep 2026US 12,729,634 B2thyssenkrupp AG
- Carrier-less spring loaded planetary gearset used with eVCT8 Sep 2026US 12,729,635 B2BorgWarner Inc.
- Intake over intake engine21 Jul 2026US 12,687,135 B1
- Engine assembly oil management14 Jul 2026US 12,680,519 B2Arctic Cat Inc.
- Variable duration valve train9 Jun 2026US 12,650,087 B1
- Camshaft8 Oct 2026US 2026/0309059 A1Subaru Corporation
- Carrier-less spring loaded planetary gearset used with evct8 Oct 2026US 2026/0309063 A1BorgWarner Inc.
- Engine gear mesh backlash optimization1 Oct 2026US 2026/0298115 A1Deere & Company
- Roller hydraulic valve lifter bearing10 Sep 2026US 2026/0266204 A1Roller Bearing Company of America, Inc.
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
Most cited
By later US patents
- 6-cycle engine with regenerator168US 8,186,334 B22012
- Internal combustion engine102US 4,805,571 AHumphrey Cycle Engine Partners, L.P. · 1989
- Multi-level skip fire100US 9,399,964 B2Tula Technology, Inc. · 2016
- Marine hulls and drives97US 7,984,684 B22011
- Variable camshaft timing for internal combustion engine95US 5,107,804 ABorg-Warner Automotive Transmission & Engine Components Corporation · 1992