F04B 19/14
Of endless-chain type
Official title: of endless-chain type, e.g. with the chains carrying pistons co-operating with open-ended cylinders
F04B19/14 (Of endless-chain type) appears on 21 US grants and 5 published applications in this corpus.
Search patents in F04B- Granted patents
- 21
- Published applications
- 5
- Assignees
- 11
- Inventors
- 33
- Latest grant
- 25 Apr 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Vertical water pumping system25 Apr 2023US 11,635,054 B1
- Solid particulate pump28 Jun 2022US 11,371,494 B2Gas Technology Institute
- Multiple-fluid injection pump25 Feb 2020US 10,568,811 B2R.P. Scherer Technologies, LLC
- Multiple-fluid injection pump27 Aug 2019US 10,391,034 B2R.P. Scherer Technologies, LLC
- Pump device for converting rotation into fluid flow30 Jul 2019US 10,364,830 B2Spira Energy AB
- Solid particulate pump2 Apr 2020US 2020/0102942 A1Gas Technology Institute
- Pump device for converting rotation into fluid flow3 May 2018US 2018/0119710 A1Ehrnberg Solutions AB
- Multiple-fluid injection pump24 Aug 2017US 2017/0239142 A1R.P. Scherer Technologies, LLC
- Solid particulate pump having flexible seal24 Mar 2016US 2016/0083187 A1Gas Technology Institute
- Singlestage and multistage electromagnetic revolutionary piston pump4 Aug 2005US 2005/0169777 A1
Most cited
By later US patents
- Fluid pump50US 4,321,020 ASperry Corporation · 1982
- Methods and apparatus for controlling long-stroke pumping units using a variable-speed drive23US 5,246,076 AEVI-Highland Pump Company, Inc. · 1993
- Liquid lift16US 4,962,847 ACablelift Oil Corporation · 1990
- Pumping system15US 4,830,585 A1989
- Drive head for flexible conveyor fluid lifting system13US 5,381,861 ASOCO Technologies, Inc. · 1995