F02F 3/022
The pistons having an oval circumference or non-cylindrical shaped skirts
Official title: {the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval (F02F3/025, F02F3/027 take precedence)}
F02F3/022 (The pistons having an oval circumference or non-cylindrical shaped skirts) appears on 39 US grants and 20 published applications in this corpus.
Search patents in F02F- Granted patents
- 39
- Published applications
- 20
- Assignees
- 25
- Inventors
- 70
- Latest grant
- 22 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 4 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 9 |
| 2019 | 1 | 1 |
| 2020 | 5 | 2 |
| 2021 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Internal combustion engine22 Jun 2021US 11,041,456 B2Quest Engines, LLC
- Internal combustion engine27 Apr 2021US 10,989,138 B2Quest Engines, LLC
- Piston for internal combustion engine12 Jan 2021US 10,890,135 B2Suzuki Motor Corporation
- Piston15 Sep 2020US 10,774,931 B2Mahle International GmbH
- Internal combustion engine1 Sep 2020US 10,760,524 B2Honda Motor Co., Ltd.
- Piston For Internal Combustion Engine26 Mar 2020US 2020/0095952 A1Suzuki Motor Corporation
- Reciprocating piston engine30 Jan 2020US 2020/0032738 A1Mazda Motor Corporation
- Internal combustion engine7 Nov 2019US 2019/0338723 A1Honda Motor Co., Ltd.
- Piston For An Internal Combustion Engine and Production Method Therefore27 Dec 2018US 2018/0372020 A1KS Kolbenschmidt GmbH
- Piston25 Oct 2018US 2018/0306320 A1Mahle International GmbH
Most cited
By later US patents
- Asymmetric oval piston with higher convexity thrust face23US 4,831,919 AAe PLC · 1989
- Piston with flush connecting wall sections at pin boss surface19US 5,299,490 AAlcan Deutschland GmbH · 1994
- Light alloy piston18US 4,648,309 AKolbenschmidt Aktiengesellschaft · 1987
- Piston for internal combustion engine18US 5,054,375 AAisin Seiki Kabushiki · 1991
- Piston for internal combustion engine17US 4,756,241 AHonda Giken Kogyo Kabushiki Kaisha · 1988