F02B 57/08
Engines with star-shaped cylinder arrangements
F02B57/08 (Engines with star-shaped cylinder arrangements) appears on 130 US grants and 60 published applications in this corpus.
Search patents in F02B- Granted patents
- 130
- Published applications
- 60
- Assignees
- 34
- Inventors
- 143
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 2 | 10 |
| 2005 | 6 | 6 |
| 2006 | 4 | 2 |
| 2007 | 1 | 3 |
| 2008 | 2 | 2 |
| 2009 | 2 | 5 |
| 2010 | 3 | 1 |
| 2011 | 2 | 5 |
| 2012 | 3 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 3 |
| 2015 | 1 | 3 |
| 2016 | 5 | 2 |
| 2017 | 2 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Epicyclic rotary engine14 Jan 2025US 12,196,127 B1
- Bearing device for radial piston machine25 Jun 2024US 12,018,566 B2Daido Metal Company Ltd.
- System for the reversible transformation of a reciprocating motion in a rotary motion28 May 2024US 11,994,030 B2Ibs Motortech Italia Srl
- Rotary engine11 Jul 2023US 11,697,993 B1
- System for the reversible transformation of a reciprocating motion in a rotary motion11 Oct 2022US 11,466,569 B2Ibs Motortech Italia Srl
- System for the reversible transformation of a reciprocating motion in a rotary motion23 Feb 2023US 2023/0059790 A1Ibs Motortech Italia Srl
- Cam-driven radial rotary engine incorporating an hcci apparatus19 May 2022US 2022/0154633 A1
- Bearing device for radial piston machine31 Mar 2022US 2022/0098982 A1Daido Metal Company Ltd.
- Zhou engine and power-cam mechanism14 Oct 2021US 2021/0317780 A1
- Piston drive device27 Aug 2020US 2020/0271109 A1Shinano Kenshi Co., Ltd.
Most cited
By later US patents
- Rotary engine expansion chamber apparatus and method of operation therefor140US 8,523,547 B22013
- Rotary and reciprocating internal combustion engine and compressor104US 5,875,744 A1999
- Rotary cam internal combustion radial engine37US 3,964,450 A1976
- Rotary engine33US 4,078,529 A1978
- Radial engine28US 4,331,108 A1982