F01B 21/02
The machines or engines being all of reciprocating-piston type
Official title: the machines or engines being all of reciprocating-piston type
F01B21/02 (The machines or engines being all of reciprocating-piston type) appears on 23 US grants and 25 published applications in this corpus.
Search patents in F01B- Granted patents
- 23
- Published applications
- 25
- Assignees
- 14
- Inventors
- 35
- Latest grant
- 15 Aug 2023
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 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 4 |
| 2020 | 3 | 1 |
| 2021 | 6 | 4 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Internal combustion engine with adaptable piston stroke15 Aug 2023US 11,725,576 B2
- Ship drive system and retrofitting method for a ship drive system11 Oct 2022US 11,466,613 B2Fuelsave GmbH
- Piston internal combustion engine with generator10 Aug 2021US 11,085,370 B2
- Modular internal combustion engine with adaptable piston stroke8 Jun 2021US 11,028,771 B2
- Ship drive system and retrofitting method for a ship drive system25 May 2021US 11,015,520 B2Fuelsave GmbH
- Internal Combustion Engine with Planetary Piston Gears30 Nov 2023US 2023/0383692 A1
- Expander systems for harnessing energy from pressurized fluid flow22 Jun 2023US 2023/0193759 A1CNX Resources Corporation
- Internal Combustion Engine with Adaptable Piston Stroke23 Sep 2021US 2021/0293178 A1
- Ship drive system and retrofitting method for a ship drive system12 Aug 2021US 2021/0246825 A1Fuelsave GmbH
- Compressed gas engine29 Jul 2021US 2021/0231111 A1US Air Technology, Inc.
Most cited
By later US patents
- High efficiency multicycle internal combustion engine with waste heat recovery41US 8,061,140 B2Thermal Power Recovery LLC · 2011
- Fluidic-piston engine25US 6,568,169 B22003
- Maintenance optimization control system for load sharing between engines10US 10,734,814 B2Caterpillar Inc. · 2020
- Method and apparatus for achieving higher thermal efficiency in a steam engine or steam expander10US 8,448,440 B2Thermal Power Recovery LLC · 2013
- High efficiency dual cycle internal combustion steam engine and method9US 8,661,817 B2Thermal Power Recovery LLC · 2014