F04B 9/1372
The movement of each pump piston in the two directions is obtained
Official title: {the movement of each pump piston in the two directions is obtained by a double-acting piston fluid motor}
F04B9/1372 (The movement of each pump piston in the two directions is obtained) appears on 15 US grants and 7 published applications in this corpus.
Search patents in F04B- Granted patents
- 15
- Published applications
- 7
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Industrial pneumatic pump for a viscous fluid3 Jun 2025US 12,320,350 B2Meclube S.R.L.
- Hybrid thermodynamic compressor12 Sep 2023US 11,754,061 B2Boostheat
- GM cryocooler and method of operating GM cryocooler9 Aug 2022US 11,408,406 B2Sumitomo Heavy Industries, Ltd.
- Seal-less piston pump for liquefied gas24 Jan 2017US 9,551,328 B2Delaware Capital Formation, Inc.
- Multi-stage expansible chamber pneumatic system29 May 2012US 8,186,972 B1Wilden Pump & Engineering Co.
- Compression system18 Jun 2026US 2026/0168483 A1Universite Du Luxembourg
- An industrial pneumatic pump for a viscous fluid1 Feb 2024US 2024/0035459 A1Meclube S.R.L.
- Hybrid thermodynamic compressor9 Jun 2022US 2022/0178359 A1Boostheat
- Gm cryocooler and method of operating gm cryocooler17 Oct 2019US 2019/0316574 A1Sumitomo Heavy Industries, Ltd.
- Seal-less piston pump for liquefied gas18 Sep 2014US 2014/0271262 A1Delaware Capital Formation, Inc.
Most cited
By later US patents
- Dispensing system for low stability fluids36US 4,116,364 ABinks Manufacturing Company · 1978
- Barrier fluid seal, reciprocating pump and operating method22US 6,158,967 ATexas Pressure Systems, Inc. · 2000
- Method and system for pumping powder, and powder coating apparatus19US 7,287,964 B2ITW Gema AG · 2007
- Pumping system15US 4,701,112 AAdhesive Engineering Company · 1987
- Pumping system13US 4,765,509 AAdhesive Engineering Company · 1988