F01L 1/047
Camshafts
F01L1/047 (Camshafts) appears on 3,143 US grants and 2,885 published applications in this corpus.
Search patents in F01L- Granted patents
- 3,143
- Published applications
- 2,885
- Assignees
- 557
- Inventors
- 4,519
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 18 | 0 |
| 1986 | 24 | 0 |
| 1987 | 35 | 0 |
| 1988 | 36 | 0 |
| 1989 | 35 | 0 |
| 1990 | 37 | 0 |
| 1991 | 39 | 0 |
| 1992 | 29 | 0 |
| 1993 | 36 | 0 |
| 1994 | 22 | 0 |
| 1995 | 29 | 0 |
| 1996 | 30 | 0 |
| 1997 | 34 | 0 |
| 1998 | 42 | 0 |
| 1999 | 35 | 0 |
| 2000 | 27 | 0 |
| 2001 | 60 | 23 |
| 2002 | 70 | 91 |
| 2003 | 70 | 67 |
| 2004 | 66 | 91 |
| 2005 | 83 | 93 |
| 2006 | 66 | 83 |
| 2007 | 75 | 118 |
| 2008 | 72 | 130 |
| 2009 | 66 | 153 |
| 2010 | 98 | 140 |
| 2011 | 107 | 119 |
| 2012 | 109 | 114 |
| 2013 | 114 | 101 |
| 2014 | 119 | 99 |
| 2015 | 95 | 116 |
| 2016 | 97 | 183 |
| 2017 | 133 | 285 |
| 2018 | 207 | 212 |
| 2019 | 241 | 172 |
| 2020 | 216 | 155 |
| 2021 | 140 | 127 |
| 2022 | 109 | 89 |
| 2023 | 61 | 40 |
| 2024 | 62 | 41 |
| 2025 | 41 | 24 |
| 2026 | 15 | 19 |
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.
- Valve opening and closing timing control device2 Jun 2026US 12,644,399 B2Aisin Corporation
- 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
- 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
- Variable camshaft timing for internal combustion engine93US 5,002,023 ABorg-Warner Automotive, Inc. · 1991