F04B 9/113
Reciprocating movement of the pumping members being obtained by a double-acting liquid
Official title: reciprocating movement of the pumping members being obtained by a double-acting liquid motor
F04B9/113 (Reciprocating movement of the pumping members being obtained by a double-acting liquid) appears on 143 US grants and 124 published applications in this corpus.
Search patents in F04B- Granted patents
- 143
- Published applications
- 124
- Assignees
- 109
- Inventors
- 275
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 3 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 1 | 7 |
| 2006 | 2 | 3 |
| 2007 | 2 | 1 |
| 2008 | 2 | 6 |
| 2009 | 1 | 5 |
| 2010 | 1 | 3 |
| 2011 | 5 | 3 |
| 2012 | 1 | 4 |
| 2013 | 3 | 5 |
| 2014 | 2 | 5 |
| 2015 | 4 | 3 |
| 2016 | 3 | 6 |
| 2017 | 3 | 5 |
| 2018 | 5 | 14 |
| 2019 | 9 | 6 |
| 2020 | 10 | 5 |
| 2021 | 7 | 8 |
| 2022 | 5 | 7 |
| 2023 | 3 | 3 |
| 2024 | 6 | 10 |
| 2025 | 8 | 5 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Pumping apparatus and pump control apparatus and method203US 4,990,058 AHaliburton Company · 1991
- Hydraulically powered compressor and hydraulic control and power system therefor90US 4,653,986 ATidewater Compression Service, Inc. · 1987
- Integrated pumping and/or energy recovery system64US 6,017,200 AScience Applications International Corporation · 2000
- Method of and apparatus for transporting fluid substances63US 4,229,143 ANikex Nehezipari Kulkereskedelmi Vallalat · 1980
- Pumping apparatus for perfusion and other fluid catheterization procedures62US 5,529,463 ACordis Corporation · 1996