F02F 11/00
Arrangements of sealings in combustion engines
Official title: Arrangements of sealings in combustion engines {(piston rings or ring sealings of similar construction F16J9/00)}
F02F11/00 (Arrangements of sealings in combustion engines) appears on 553 US grants and 469 published applications in this corpus.
Search patents in F02F- Granted patents
- 553
- Published applications
- 469
- Assignees
- 213
- Inventors
- 1,112
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 10 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 3 | 0 |
| 1999 | 10 | 0 |
| 2000 | 15 | 0 |
| 2001 | 16 | 3 |
| 2002 | 7 | 13 |
| 2003 | 11 | 13 |
| 2004 | 15 | 17 |
| 2005 | 17 | 19 |
| 2006 | 14 | 25 |
| 2007 | 11 | 14 |
| 2008 | 6 | 14 |
| 2009 | 4 | 7 |
| 2010 | 12 | 9 |
| 2011 | 5 | 10 |
| 2012 | 2 | 11 |
| 2013 | 5 | 23 |
| 2014 | 12 | 27 |
| 2015 | 15 | 42 |
| 2016 | 30 | 37 |
| 2017 | 20 | 33 |
| 2018 | 40 | 25 |
| 2019 | 24 | 17 |
| 2020 | 11 | 22 |
| 2021 | 28 | 25 |
| 2022 | 22 | 18 |
| 2023 | 17 | 12 |
| 2024 | 22 | 19 |
| 2025 | 14 | 6 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cylinder block and internal combustion engine system22 Sep 2026US 12,742,432 B2Cummins Inc.
- Engine assembly oil management14 Jul 2026US 12,680,519 B2Arctic Cat Inc.
- Cylinder head structure5 May 2026US 12,618,356 B2Kubota Corporation
- Hermetically sealed case14 Apr 2026US 12,601,309 B2Hitachi Astemo, Ltd.
- Piston cylinder system and method14 Apr 2026US 12,601,310 B2Innio Waukesha Gas Engines Inc.
- Interchangeable engine assembly18 Jun 2026US 2026/0168462 A1Arctic Cat Inc.
- Cylinder liner for internal combustion engine18 Jun 2026US 2026/0168463 A1Caterpillar Inc.
- Cylinder head joint gas leakage mitigation23 Apr 2026US 2026/0110272 A1Cummins Power Generation Inc.
- Cylinder head joint gas leakage mitigation23 Apr 2026US 2026/0110273 A1Cummins Power Generation Inc.
- Piston cylinder system and method2 Apr 2026US 2026/0092574 A1Innio Waukesha Gas Engines Inc.
Most cited
By later US patents
- Method and apparatus for operating with a hopping control channel in a communication system165US 5,506,863 AMotorola, Inc. · 1996
- Sealed joint and gasket therefor81US 3,930,656 AParker-Hannifin Corporation · 1976
- Cylinder head gasket56US 6,976,683 B2Elring Klinger AG · 2005
- Reinforced core heavy duty gasket51US 5,362,074 ADana Corporation · 1994
- Valve cover assembly for a vehicle engine and method for producing same41US 7,316,215 B1Hayes Lemmerz International, Inc. · 2008