F01C 1/3441
The inner and outer member being in contact along one line or
Official title: {the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation}
F01C1/3441 (The inner and outer member being in contact along one line or) appears on 196 US grants and 146 published applications in this corpus.
Search patents in F01C- Granted patents
- 196
- Published applications
- 146
- Assignees
- 78
- Inventors
- 281
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 2 |
| 2003 | 13 | 8 |
| 2004 | 1 | 4 |
| 2005 | 5 | 11 |
| 2006 | 5 | 10 |
| 2007 | 4 | 7 |
| 2008 | 4 | 7 |
| 2009 | 5 | 10 |
| 2010 | 4 | 10 |
| 2011 | 6 | 18 |
| 2012 | 5 | 5 |
| 2013 | 9 | 4 |
| 2014 | 11 | 7 |
| 2015 | 7 | 6 |
| 2016 | 3 | 7 |
| 2017 | 6 | 1 |
| 2018 | 5 | 6 |
| 2019 | 4 | 3 |
| 2020 | 5 | 5 |
| 2021 | 3 | 9 |
| 2022 | 6 | 1 |
| 2023 | 3 | 2 |
| 2024 | 4 | 0 |
| 2025 | 2 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Split-type blade, fluid driving device and fluid driving proportional mixer19 May 2026US 12,629,648 B2Shanghai Vision Mechanical Joint Co., Ltd.
- Apparatus for energy conversion31 Mar 2026US 12,590,550 B2G-En Pte Ltd
- Single sliding vane rotary displacement pump23 Dec 2025US 12,503,942 B1Ace Machine Design Inc.
- 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.
- Rotor-stator assembly for a rotary engine, compressor or pump, a rotary engine and a lifting unit and device25 Jun 2026US 2026/0176971 A1
- Apparatus for energy conversion12 Jun 2025US 2025/0188854 A1G-En Pte Ltd
- 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
Most cited
By later US patents
- Rotary engine expansion chamber apparatus and method of operation therefor140US 8,523,547 B22013
- Sliding-blade rotary air-heat engine with isothermal compression of air99US 5,839,270 A1998
- High efficiency positive displacement thermodynamic system67US 8,424,284 B22013
- Constant pressure heating vane rotary engine52US 3,989,011 A1976
- Multi-stage modular rotary internal combustion engine35US 7,117,839 B22006