F02F 3/027
The skirt wall having cavities
Official title: {the skirt wall having cavities}
F02F3/027 (The skirt wall having cavities) appears on 32 US grants and 26 published applications in this corpus.
Search patents in F02F- Granted patents
- 32
- Published applications
- 26
- Assignees
- 27
- Inventors
- 81
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 3 |
| 2019 | 0 | 2 |
| 2020 | 4 | 4 |
| 2021 | 5 | 3 |
| 2022 | 0 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Piston for assembly with a cylinder25 Mar 2025US 12,258,922 B2Cummins Inc.
- Piston and method for producing same16 Jul 2024US 12,037,960 B2Federal-Mogul Nurnberg GmbH
- Cast piston for an internal combustion engine, consisting of an iron-based material27 Jun 2023US 11,686,270 B2Federal-Mogul Nurnberg GmbH
- Steel piston with optimized design31 Jan 2023US 11,566,581 B2KS Kolbenschmidt GmbH
- Piston for internal combustion engine7 Sep 2021US 11,111,877 B2Art Metal Mfg. Co., Ltd.
- Piston for assembly with a cylinder30 May 2024US 2024/0175407 A1Cummins Inc.
- Piston and method for producing same26 Jan 2023US 2023/0023170 A1Federal-Mogul Nurnberg GmbH
- Cast piston for an internal combustion engine, consisting of an iron-based material15 Jul 2021US 2021/0215118 A1Federal-Mogul Nurnberg GmbH
- Piston24 Jun 2021US 2021/0189995 A1Toyota Jidosha Kabushiki Kaisha
- Enhanced piston for improving the efficiency of an internal combustion engine18 Feb 2021US 2021/0047982 A1
Most cited
By later US patents
- Piston for an internal combustion engine18US 8,640,669 B2Honda Motor Co., Ltd. · 2014
- Light alloy piston17US 4,809,652 AKolbenschmidt Aktiengesellschaft · 1989
- Engine piston17US 5,331,932 AUnisia Jecs Corporation · 1994
- Piston for internal combustion engine17US 8,347,843 B12013
- Pistons12US 4,702,151 AAe PLC · 1987