F02M 57/04
The devices being combustion-air intake or exhaust valves
Official title: the devices being combustion-air intake or exhaust valves
F02M57/04 (The devices being combustion-air intake or exhaust valves) appears on 40 US grants and 19 published applications in this corpus.
Search patents in F02M- Granted patents
- 40
- Published applications
- 19
- Assignees
- 20
- Inventors
- 61
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 5 |
| 2017 | 2 | 1 |
| 2018 | 3 | 3 |
| 2019 | 1 | 0 |
| 2020 | 5 | 3 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel injection systems for snowmobiles11 Nov 2025US 12,467,426 B2Arctic Cat Inc.
- Internal combustion steam engine8 Dec 2020US 10,858,990 B2Dma Tech S.à R.L.
- Method for starting an engine8 Dec 2020US 10,859,055 B1Ford Global Technologies, LLC
- System and method for valve seat injection20 Oct 2020US 10,808,650 B2Ford Global Technologies, LLC
- High altitude internal combustion engine/turbocharger exhaust combustor18 Aug 2020US 10,746,090 B2The Boeing Company
- Fuel Injection Systems for Snowmobiles5 Mar 2026US 2026/0063096 A1Arctic Cat Inc.
- Fuel Injection Systems for Snowmobiles31 Jul 2025US 2025/0243834 A1Arctic Cat Inc.
- System and method for valve seat injection14 May 2020US 2020/0149497 A1Ford Global Technologies, LLC
- High altitude internal combustion engine/turbocharger exhaust combustor27 Feb 2020US 2020/0063647 A1The Boeing Company
- Internal combustion steam engine20 Feb 2020US 2020/0056535 A1Dma Tech S.à R.L.
Most cited
By later US patents
- Combined fuel injection and intake valve for electronic fuel injection engine systems57US 4,020,803 AThe Bendix Corporation · 1977
- Apparatus for adjustably controlling valve movement and fuel injection41US 5,237,968 ACaterpillar Inc. · 1993
- Method and apparatus for optimizing breathing utilizing unit valve actuation40US 5,216,987 ACaterpillar Inc. · 1993
- Hydraulic valve actuator and fuel injection system26US 4,200,067 AGeneral Motors Corporation · 1980
- Fluid controlling system for an engine19US 5,522,358 ACaterpillar Inc. · 1996