F04B 53/142
Intermediate liquid-piston between a driving piston and a driven piston
Official title: {Intermediate liquid-piston between a driving piston and a driven piston (F04B9/10, F04B43/06, F04B43/10 and F04B53/141 take precedence)}
F04B53/142 (Intermediate liquid-piston between a driving piston and a driven piston) appears on 16 US grants and 6 published applications in this corpus.
Search patents in F04B- Granted patents
- 16
- Published applications
- 6
- Assignees
- 14
- Inventors
- 26
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 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 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Reciprocating piston pump for conveying a medium29 Jul 2025US 12,372,077 B2Hauhinco Maschinenfabrik G. Hausherr, Jochums GmbH & Co. KG
- Reciprocating pump16 Jun 2020US 10,683,856 B2Udiflow Limited
- Gradient high pressure syringe pump6 Aug 2019US 10,371,141 B1
- Pump, a homogenizer comprising said pump and a method for pumping a liquid product16 Oct 2018US 10,100,830 B2Tetra Laval Holdings & Finance S. A.
- Multistage piston compressor18 Aug 2015US 9,109,587 B2Linde Aktiengesellschaft
- Reciprocating Piston Pump for Conveying a Medium2 May 2024US 2024/0141890 A1Hauhinco Maschinenfabrik G. Hausherr, Jochums GmbH & Co. KG
- An apparatus and method for compressing fluid31 Jan 2019US 2019/0032646 A1Cryostar SAS
- A reciprocating pump10 Jan 2019US 2019/0010936 A1Udiflow Limited
- A pump, a homogenizer comprising said pump and a method for pumping a liquid product28 Dec 2017US 2017/0370355 A1Tetra Laval Holdings & Finance S. A.
- Multistage piston compressor29 Nov 2012US 2012/0301328 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Pump apparatus22US 5,348,451 AFramo Developments (UK) Limited · 1994
- System for pumping an abrasive or corrosive fluid18US 4,304,527 AEnglish Clays Lovering Pochin & Company Limited · 1981
- Velocity actuated valve for a downhole pump14US 4,425,083 AKobe, Inc. · 1984
- High pressure piston pumps12US 4,304,531 ABritish Hydromechanics Research Assoc. · 1981
- High pressure pump for all liquids12US 6,264,437 B1Hydro Rene Leduc · 2001