F02B 33/16
Working and pumping pistons having differing movements
Official title: working and pumping pistons having differing movements
F02B33/16 (Working and pumping pistons having differing movements) appears on 7 US grants and 5 published applications in this corpus.
Search patents in F02B- Granted patents
- 7
- Published applications
- 5
- Assignees
- 2
- Inventors
- 9
- Latest grant
- 26 Jan 2021
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 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Compressor and method for operation of a compressor26 Jan 2021US 10,900,498 B1Ford Global Technologies, LLC
- Two-stroke internal combustion engine with crankcase lubrication system2 Apr 2019US 10,247,065 B2
- Internal combustion engine25 Aug 2009US 7,578,267 B2Advanced Propulsion Technologies, Inc.
- Internal combustion engine30 Dec 2008US 7,469,664 B2Advanced Propulsion Technologies, Inc.
- Tandem-differential-piston cursive-constant-volume internal-combustion engine23 Apr 1996US 5,509,382 A
- Two-stroke internal combustion engine with crankcase lubrication system6 Dec 2018US 2018/0347415 A9
- Two-stroke internal combustion engine with crankcase lubrication system21 Dec 2017US 2017/0362972 A1
- Internal combustion engine4 Jun 2009US 2009/0139476 A1Advanced Propulsion Technologies, Inc.
- Internal combustion engine15 Jun 2006US 2006/0124084 A1Advanced Propulsion Technologies, Inc.
- Two-stroke cycle, free piston, shaft power engine26 Feb 2004US 2004/0035377 A1
Most cited
By later US patents
- Internal combustion engine50US 7,469,664 B2Advanced Propulsion Technologies, Inc. · 2008
- Internal combustion engine17US 7,578,267 B2Advanced Propulsion Technologies, Inc. · 2009
- Tandem-differential-piston cursive-constant-volume internal-combustion engine16US 5,509,382 A1996
- Internal combustion engine8US 4,516,539 A1985
- Two-stroke internal combustion engine with crankcase lubrication system4US 10,247,065 B22019