F04B 2201/0209
Duration of piston stroke
F04B2201/0209 (Duration of piston stroke) appears on 35 US grants and 24 published applications in this corpus.
Search patents in F04B- Granted patents
- 35
- Published applications
- 24
- Assignees
- 26
- Inventors
- 78
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 3 |
| 2019 | 2 | 1 |
| 2020 | 2 | 3 |
| 2021 | 3 | 0 |
| 2022 | 1 | 4 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating a construction-material and/or viscous-material pump for conveying construction material and/or viscous material, and construction-material and/or viscous-material pump for conveying construction material and/or viscous material28 Jul 2026US 12,692,860 B2Putzmeister Engineering GmbH
- Pumping control method and apparatus, material distribution method and apparatus as well as distribution device28 Apr 2026US 12,612,908 B2Zoomlion Heavy Industry Science and Technology Co., Ltd.
- Solvent delivery with a reduced volume single stroke pumping arrangement providing continuous solvent flow18 Nov 2025US 12,474,307 B2Waters Technologies Corporation
- Apparatus for controlling compressor, compressor and method for controlling compressor10 Jun 2025US 12,326,146 B2LG Electronics Inc.
- Pumping system with control features for controlling stroke duration and injection volume25 Oct 2022US 11,480,163 B2Saudi Arabian Oil Company
- Solvent delivery with a reduced volume single stroke pumping arrangement providing continuous solvent flow12 Feb 2026US 2026/0043774 A1Waters Technologies Corporation
- Pump and fluid displacer for a pump1 Jan 2026US 2026/0002526 A1Graco Minnesota Inc.
- Method for Operating a Construction-Material And/or Viscous-Material Pump for Conveying Construction Material And/or Viscous Material, and Construction-Material And/or Viscous-Material Pump for Conveying Construction Material And/or Viscous Material24 Aug 2023US 2023/0265843 A1Putzmeister Engineering GmbH
- Apparatus for controlling compressor, compressor and method for controlling compressor15 Dec 2022US 2022/0397112 A1LG Electronics Inc.
- Pumping control method and apparatus, material distribution method and apparatus as well as distribution device1 Dec 2022US 2022/0381047 A1Zoomlion Heavy Industry Science and Technology Co., Ltd.
Most cited
By later US patents
- Apparatus and method for pumping supercritical fluid and measuring flow thereof55US 5,755,559 AIsco, Inc. · 1998
- Apparatus and method for thermoelectric cooling of an extraction fluid pump43US 5,738,498 AIsco, Inc. · 1998
- Sludge pump with monitoring system38US 5,388,965 AFriedrich Wilhelm Schwing GmbH · 1995
- Apparatus and method for super critical fluid extraction37US 6,319,410 B1Isco, Inc. · 2001
- Linear motor controller35US 6,812,597 B2Fisher & Paykel Appliances Limited · 2004