F02F 3/02
Pistons: having means for accommodating or controlling heat expansion
Official title: having means for accommodating or controlling heat expansion
F02F3/02 (Pistons: having means for accommodating or controlling heat expansion) appears on 175 US grants and 124 published applications in this corpus.
Search patents in F02F- Granted patents
- 175
- Published applications
- 124
- Assignees
- 87
- Inventors
- 373
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 13 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 2 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 3 |
| 2010 | 1 | 3 |
| 2011 | 2 | 6 |
| 2012 | 1 | 6 |
| 2013 | 2 | 9 |
| 2014 | 6 | 5 |
| 2015 | 8 | 7 |
| 2016 | 3 | 13 |
| 2017 | 6 | 6 |
| 2018 | 9 | 18 |
| 2019 | 7 | 5 |
| 2020 | 12 | 12 |
| 2021 | 10 | 4 |
| 2022 | 2 | 3 |
| 2023 | 7 | 4 |
| 2024 | 5 | 1 |
| 2025 | 4 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Piston for an internal combustion engine and method of manufacturing the piston17 Jun 2025US 12,331,697 B2Mahle International GmbH
- Piston body for an engine having surface features for interacting with boundary layer22 Apr 2025US 12,281,626 B1Hyliion Holdings Corp.
- Piston for assembly with a cylinder25 Mar 2025US 12,258,922 B2Cummins Inc.
- Friction loss-reduced piston for an internal combustion engine28 Jan 2025US 12,209,551 B2KS Kolbenschmidt GmbH
- Piston having baffle ring for limiting abnormal combustion and piston and cylinder liner assembly1 Oct 2024US 12,104,551 B1Caterpillar Inc.
- Piston26 Mar 2026US 2026/0085647 A1Toyota Jidosha Kabushiki Kaisha
- Piston assembly for a linear electric machine15 Jan 2026US 2026/0018969 A1Hyliion Holdings Corp.
- Diesel engine with high-pressure injection and charging function, and piston or a diesel engine16 Jan 2025US 2025/0020089 A1Newgreen AG
- Piston, crank drive and reciprocating internal combustion engine9 Jan 2025US 2025/0012230 A1Newgreen AG
- Piston for an internal combustion engine and method of manufacturing the piston9 Jan 2025US 2025/0012231 A1Mahle International GmbH
Most cited
By later US patents
- Reinforced pistons53US 4,679,493 AAe PLC · 1987
- Hybrid internal combustion reciprocating engine39US 4,765,293 ACessna Aircraft Company · 1988
- Piston of internal combustion engine32US 6,240,828 B1Nissan Motor Co., Ltd. · 2001
- Composite insert for use in a piston30US 5,425,306 ADana Corporation · 1995
- Plunger piston for internal combustion engines23US 4,704,950 AMahle GmbH · 1987