F01C 1/3442
The surfaces of the inner and outer member, forming the working space
Official title: {the surfaces of the inner and outer member, forming the working space, being surfaces of revolution}
F01C1/3442 (The surfaces of the inner and outer member, forming the working space) appears on 100 US grants and 75 published applications in this corpus.
Search patents in F01C- Granted patents
- 100
- Published applications
- 75
- Assignees
- 51
- Inventors
- 164
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 7 | 4 |
| 2004 | 0 | 3 |
| 2005 | 5 | 6 |
| 2006 | 1 | 5 |
| 2007 | 2 | 4 |
| 2008 | 3 | 5 |
| 2009 | 4 | 9 |
| 2010 | 4 | 5 |
| 2011 | 3 | 6 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 3 | 4 |
| 2016 | 0 | 1 |
| 2017 | 4 | 1 |
| 2018 | 3 | 4 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 5 |
| 2022 | 3 | 1 |
| 2023 | 3 | 2 |
| 2024 | 3 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Split-type blade, fluid driving device and fluid driving proportional mixer19 May 2026US 12,629,648 B2Shanghai Vision Mechanical Joint Co., Ltd.
- Integrated internal continuous combustion rotary engine27 May 2025US 12,312,960 B1
- Seal assembly for a rotary engine housing8 Oct 2024US 12,110,796 B1Pratt & Whitney Canada Corp.
- Rotating heating chamber apparatus and method of use thereof23 Jul 2024US 12,044,128 B2
- Flow path diverter for pneumatic tool30 Jan 2024US 11,883,942 B2Snap-on Incorporated
- Rotor-stator assembly for a rotary engine, compressor or pump, a rotary engine and a lifting unit and device25 Jun 2026US 2026/0176971 A1
- Split-type blade, fluid driving device and fluid driving proportional mixer20 Jul 2023US 2023/0226506 A1Ningbo Forward Fire Technology Co., Ltd.
- Therapeutic delivery vesicles13 Apr 2023US 2023/0111666 A1Evox Therapeutics Ltd
- Self-Rotation Graphene Heat-Dissipation Device For Direct-Drive Electro-Hydrostatic Actuator1 Dec 2022US 2022/0381266 A1Harbin Institute of Technology
- Flow path diverter for pneumatic tool30 Dec 2021US 2021/0402587 A1Snap-on Incorporated
Most cited
By later US patents
- Constant pressure heating vane rotary engine52US 3,989,011 A1976
- Rotary internal combustion engine34US 4,241,713 A1980
- Vortex generator for sliding van internal combustion engine31US 5,979,395 AMallen Research Limited Partnership · 1999
- High efficiency rotary vane motor28US 6,106,255 AThermo King Corporation · 2000
- Rotary external combustion engine24US 4,432,203 AThermal Systems Limited · 1984