F01C 1/28
Of other than internal-axis type
Official title: of other than internal-axis type
F01C1/28 (Of other than internal-axis type) appears on 32 US grants and 22 published applications in this corpus.
Search patents in F01C- Granted patents
- 32
- Published applications
- 22
- Assignees
- 13
- Inventors
- 40
- Latest grant
- 4 Dec 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 4 |
| 2010 | 2 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 3 | 3 |
| 2016 | 2 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Planetary rotary engine with rotary ring valves4 Dec 2018US 10,145,243 B2Planetary Rotor Engine Company
- Rotary-piston engine26 Sep 2017US 9,771,934 B2
- Positive displacement rotary devices with uniquely configured voids30 May 2017US 9,664,047 B2Mallen Research Limited Partnership
- Dual tip seals for a rotary engine11 Oct 2016US 9,464,567 B2Power Source Technologies, Inc.
- Rotary engine with rotary power heads1 Mar 2016US 9,273,556 B2
- Rotary motor with integral fluid seal27 Nov 2025US 2025/0361808 A1Coool.Energy Ltd
- Planetary rotary engine with rotary ring valves29 Sep 2016US 2016/0281595 A1Planetary Rotor Engine Company
- Positive displacement rotary devices2 Jul 2015US 2015/0184657 A1Mallen Research Limited Partnership
- Rotary engine with rotary power heads14 May 2015US 2015/0128895 A1
- Rotary-piston engine2 Apr 2015US 2015/0093278 A1
Most cited
By later US patents
- Rotary internal combustion engine25US 4,934,325 A1990
- Positive displacement rotary devices with uniquely configured voids20US 9,664,047 B2Mallen Research Limited Partnership · 2017
- Rotary engine with pistons and lenticular valves18US 4,083,663 A1978
- Planetary rotary engine18US 8,356,585 B2Planetary Rotor Engine Company · 2013
- Rotary internal combustion engine17US 5,341,782 A1994