F01L 1/08
Shape of cams
F01L1/08 (Shape of cams) appears on 643 US grants and 543 published applications in this corpus.
Search patents in F01L- Granted patents
- 643
- Published applications
- 543
- Assignees
- 197
- Inventors
- 1,075
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 21 | 4 |
| 2002 | 18 | 8 |
| 2003 | 12 | 16 |
| 2004 | 18 | 28 |
| 2005 | 24 | 46 |
| 2006 | 31 | 27 |
| 2007 | 18 | 33 |
| 2008 | 24 | 22 |
| 2009 | 17 | 25 |
| 2010 | 25 | 24 |
| 2011 | 17 | 13 |
| 2012 | 10 | 19 |
| 2013 | 17 | 13 |
| 2014 | 21 | 24 |
| 2015 | 15 | 20 |
| 2016 | 25 | 38 |
| 2017 | 23 | 35 |
| 2018 | 24 | 33 |
| 2019 | 37 | 35 |
| 2020 | 38 | 24 |
| 2021 | 23 | 24 |
| 2022 | 25 | 17 |
| 2023 | 11 | 3 |
| 2024 | 8 | 5 |
| 2025 | 5 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Variable duration valve train9 Jun 2026US 12,650,087 B1
- Poppet assembly and a cam-actuated control valve having a poppet assembly7 Apr 2026US 12,595,855 B2HUSCO Automotive Holdings LLC
- Engine valve control system and method24 Mar 2026US 12,584,425 B1
- Internal combustion engine with optimized intake system24 Feb 2026US 12,560,108 B2Dumarey Automotive Italia S.p.A.
- Opposed-piston internal combustion engine25 Nov 2025US 12,480,439 B2Umu Devising LLC
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Internal combustion engine with optimized intake system4 Dec 2025US 2025/0369374 A1Dumarey Automotive Italia S.p.A.
- Opposed-piston internal combustion engine2 Oct 2025US 2025/0305446 A1Umu Devising LLC
- Control system for a decompression engine brake29 May 2025US 2025/0172077 A1Stc PLC
- System and method for actuating engine valves including a recompression relief valve event10 Apr 2025US 2025/0116213 A1Jacobs Vehicle Systems, Inc.
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
- Engine valve control mechanism88US 4,203,397 AEaton Corporation · 1980
- Internal combustion engines with combined cam and electro-hydraulic engine valve control86US 5,680,841 ADiesel Engine Retarders, Inc. · 1997
- System and method for controlling the amount of lost motion between an engine valve and a valve actuation means83US 5,829,397 ADiesel Engine Retarders, Inc. · 1998