F04C 2/3566
The inner and outer member being in contact along more than one
Official title: {the inner and outer member being in contact along more than one line or surface}
F04C2/3566 (The inner and outer member being in contact along more than one) appears on 22 US grants and 16 published applications in this corpus.
Search patents in F04C- Granted patents
- 22
- Published applications
- 16
- Assignees
- 19
- Inventors
- 38
- Latest grant
- 17 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 3 |
| 2016 | 3 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Quick startup device for centrifugal pump13 Oct 2022US 2022/0325716 A1Jiangsu University
- Hydraulic Pump12 Jan 2017US 2017/0009769 A1Hs Wroclaw Sp. Z O. O.
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Most cited
By later US patents
- Pump with conveying chamber formed in outer rotor surface55US 7,674,100 B2PDD Innovations Ltd. · 2010
- Downhole motor system29US 5,518,379 A1996
- Wellbore motor system26US 5,785,509 A1998
- Rotary piston pump having synchrously driven dividing slides and dosing device6US 5,580,227 A1996
- Rotary machine6US 6,468,061 B2Merlin Corporation PTY LTD · 2002