F02F 1/004
Cylinder liners
Official title: {Cylinder liners (F02F1/08, F02F1/16 take precedence)}
F02F1/004 (Cylinder liners) appears on 329 US grants and 372 published applications in this corpus.
Search patents in F02F- Granted patents
- 329
- Published applications
- 372
- Assignees
- 160
- Inventors
- 794
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 5 |
| 2003 | 3 | 4 |
| 2004 | 3 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 4 |
| 2007 | 5 | 10 |
| 2008 | 2 | 0 |
| 2009 | 3 | 2 |
| 2010 | 5 | 3 |
| 2011 | 2 | 7 |
| 2012 | 3 | 7 |
| 2013 | 5 | 17 |
| 2014 | 7 | 13 |
| 2015 | 9 | 30 |
| 2016 | 18 | 48 |
| 2017 | 24 | 40 |
| 2018 | 33 | 40 |
| 2019 | 40 | 34 |
| 2020 | 30 | 32 |
| 2021 | 29 | 19 |
| 2022 | 18 | 11 |
| 2023 | 11 | 8 |
| 2024 | 9 | 10 |
| 2025 | 13 | 10 |
| 2026 | 10 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- System and method having an anti-polishing ring for a piston9 Jun 2026US 12,650,096 B2Innio Jenbacher GmbH & Co OG
- Coke scraping ring, cylinder liner, cylinder, gas engine and gas engine operation method21 Apr 2026US 12,607,154 B2Caterpillar Energy Solutions GmbH
- Cylinder liner and reciprocating engine comprising cylinder liner21 Apr 2026US 12,607,155 B2Tpr Co., Ltd.
- System and method having an anti-polishing ring for a piston1 Oct 2026US 2026/0298172 A1Innio Jenbacher GmbH & Co OG
- Cylinder liner for internal combustion engine18 Jun 2026US 2026/0168463 A1Caterpillar Inc.
- Arrangement for an internal combustion engine18 Jun 2026US 2026/0168576 A1
- Internal combustion engine and vehicle11 Jun 2026US 2026/0160218 A1Isuzu Motors Limited
- Cylinder, internal combustion engine, and vehicle11 Jun 2026US 2026/0160219 A1Isuzu Motors Limited
Most cited
By later US patents
- Method of cooling cylinder liners in an engine24US 5,115,771 AKabushiki Kaisha Komatsu Seisakusho · 1992
- Powdered metal cylinder liners23US 5,749,331 ATecsyn, Inc. · 1998
- Waffle cast iron cylinder liner22US 6,123,052 A2000
- Method of joining cylinder bore liners to an engine block21US 4,986,230 AFord Motor Company · 1991
- Insulated cylinder liner for a marine engine21US 7,191,770 B1Brunswick Corporation · 2007