F04B 9/1035
The movement of the pump piston in the two directions being obtained
Official title: {the movement of the pump piston in the two directions being obtained by two single-acting liquid motors each acting in one direction}
F04B9/1035 (The movement of the pump piston in the two directions being obtained) appears on 13 US grants and 6 published applications in this corpus.
Search patents in F04B- Granted patents
- 13
- Published applications
- 6
- Assignees
- 9
- Inventors
- 25
- Latest grant
- 1 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Fluid abrasive jets for machining21 Aug 2001US 6,276,993 B1
- Process for conveying thick matter containing preshredded scrap metal or similar solids12 Dec 2000US 6,158,313 APutzmeister Aktiengesellschaft
- Microfluidic cellular membrane modification19 Jan 2023US 2023/0017342 A1Hewlett-Packard Development Company, L. P.
- Microfluidic cellular membrane modification devices14 Jan 2021US 2021/0009931 A1Hewlett-Packard Development Company, L. P.
- Transmission arrangement and method for using a device moved by a hydraulic cylinder30 May 2019US 2019/0159639 A1High Gienic Oy
- Hydraulic actuator with pressure-based piston position feedback26 Jul 2018US 2018/0209413 A1General Electric Company
- Hydraulically Actuated Reciprocating Pump1 Dec 2011US 2011/0293447 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Method of and apparatus for transporting fluid substances63US 4,229,143 ANikex Nehezipari Kulkereskedelmi Vallalat · 1980
- Hydraulic-pneumatic motor43US 5,819,533 A1998
- Hydraulic-pneumatic motor40US 5,819,635 A1998
- Fluid abrasive jets for machining23US 6,276,993 B12001
- Fluid driven liquid dosing apparatus18US 4,141,467 ALever Brothers Company · 1979