F02F 1/00
Cylinders
Official title: Cylinders; Cylinder heads
F02F1/00 (Cylinders) appears on 4,433 US grants and 2,845 published applications in this corpus.
Search patents in F02F- Granted patents
- 4,433
- Published applications
- 2,845
- Assignees
- 889
- Inventors
- 7,288
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 22 | 0 |
| 1978 | 41 | 0 |
| 1979 | 24 | 0 |
| 1980 | 41 | 0 |
| 1981 | 42 | 0 |
| 1982 | 41 | 0 |
| 1983 | 38 | 0 |
| 1984 | 85 | 0 |
| 1985 | 90 | 0 |
| 1986 | 65 | 0 |
| 1987 | 106 | 0 |
| 1988 | 95 | 0 |
| 1989 | 87 | 0 |
| 1990 | 96 | 0 |
| 1991 | 95 | 0 |
| 1992 | 86 | 0 |
| 1993 | 98 | 0 |
| 1994 | 72 | 0 |
| 1995 | 79 | 0 |
| 1996 | 71 | 0 |
| 1997 | 77 | 0 |
| 1998 | 111 | 0 |
| 1999 | 118 | 0 |
| 2000 | 120 | 0 |
| 2001 | 135 | 56 |
| 2002 | 130 | 143 |
| 2003 | 149 | 119 |
| 2004 | 104 | 98 |
| 2005 | 98 | 100 |
| 2006 | 79 | 49 |
| 2007 | 51 | 62 |
| 2008 | 32 | 54 |
| 2009 | 39 | 77 |
| 2010 | 50 | 95 |
| 2011 | 45 | 79 |
| 2012 | 44 | 108 |
| 2013 | 67 | 122 |
| 2014 | 105 | 106 |
| 2015 | 104 | 181 |
| 2016 | 98 | 219 |
| 2017 | 149 | 220 |
| 2018 | 201 | 191 |
| 2019 | 199 | 178 |
| 2020 | 178 | 170 |
| 2021 | 198 | 137 |
| 2022 | 133 | 89 |
| 2023 | 89 | 69 |
| 2024 | 59 | 54 |
| 2025 | 53 | 31 |
| 2026 | 27 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02F 1/24Cylinder heads2,864
- F02F 1/02Cylinders: having cooling means932
- F02F 1/18Cylinders: other cylinders701
- F02F 1/004Cylinder liners329
- F02F 1/002Integrally formed cylinders and cylinder heads147
- F02F 2001/008Stress problems, especially related to thermal stressIndexing code65
- F02F 2001/006Cylinders: having a ring at the inside of a liner or cylinderIndexing code55
Recent patents
- Power assembly crab plate for engine29 Sep 2026US 12,747,712 B2Progress Rail Locomotive Inc.
- Cylinder block and internal combustion engine system22 Sep 2026US 12,742,432 B2Cummins Inc.
- Piston alignment tool15 Sep 2026US 12,734,659 B2Federal-Mogul Motorparts LLC
- Cylinder liner installation in an opposed-piston engine18 Aug 2026US 12,710,017 B1General Atomics Aeronautical Systems, Inc.
- Grooved injector nozzle combustion shield11 Aug 2026US 12,704,103 B2Cummins Inc.
- System and method having an anti-polishing ring for a piston1 Oct 2026US 2026/0298172 A1Innio Jenbacher GmbH & Co OG
- Cylinder block of internal combustion engine1 Oct 2026US 2026/0298173 A1Honda Motor Co., Ltd.
- Spark ignition engine and method for operating spark ignition engine17 Sep 2026US 2026/0275932 A1Mazda Motor Corporation
- Ducted fuel injection strategy employing baffle for redirection of combusting fuel plumes10 Sep 2026US 2026/0266213 A1Caterpillar Inc.
- Engine13 Aug 2026US 2026/0235068 A1Ishikawa Energy Research Co., Ltd.
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
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980
- Method and apparatus for improved operation of internal combustion engines115US 5,343,699 A1994
- Internal combustion engine102US 4,805,571 AHumphrey Cycle Engine Partners, L.P. · 1989
- In-cylinder direct-injection spark-ignition engine98US 6,138,639 ANissan Motor Co., Ltd. · 2000