F04B 17/044
Using solenoids directly actuating the piston
Official title: {using solenoids directly actuating the piston}
F04B17/044 (Using solenoids directly actuating the piston) appears on 106 US grants and 125 published applications in this corpus.
Search patents in F04B- Granted patents
- 106
- Published applications
- 125
- Assignees
- 79
- Inventors
- 209
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 0 |
| 2003 | 1 | 4 |
| 2004 | 3 | 5 |
| 2005 | 3 | 1 |
| 2006 | 0 | 4 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 5 |
| 2010 | 1 | 4 |
| 2011 | 2 | 6 |
| 2012 | 2 | 6 |
| 2013 | 3 | 5 |
| 2014 | 3 | 12 |
| 2015 | 3 | 7 |
| 2016 | 5 | 6 |
| 2017 | 12 | 8 |
| 2018 | 5 | 8 |
| 2019 | 8 | 4 |
| 2020 | 7 | 10 |
| 2021 | 9 | 6 |
| 2022 | 4 | 6 |
| 2023 | 4 | 7 |
| 2024 | 9 | 4 |
| 2025 | 4 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluidic methods and devices6 Oct 2026US 12,753,749 B2Obotics Inc.
- Pump device21 Apr 2026US 12,607,174 B2Hydac Fluidtechnik GmbH
- Pump20 May 2025US 12,305,633 B2Nitto Kohki Co., Ltd.
- Drive system for a positive displacement pump18 Mar 2025US 12,253,071 B2Graco Minnesota Inc.
- Pump device11 Mar 2025US 12,247,556 B2Hydac Fluidtechnik GmbH
- Piston pump5 Feb 2026US 2026/0036119 A1
- Drive system for a positive displacement pump26 Jun 2025US 2025/0207575 A1Graco Minnesota Inc.
- Fluidic methods and devices12 Jun 2025US 2025/0188914 A1Obotics Inc.
- Pump-Based Fluid Flow Meter12 Dec 2024US 2024/0410348 A1Fize Medical Ltd.
- Method and system for controlling a free piston mover5 Dec 2024US 2024/0405707 A1Libertine FPE Ltd
Most cited
By later US patents
- Magnetically actuated fluid handling devices for microfluidic applications164US 6,415,821 B2University of Washington · 2002
- Counterbalanced pump99US 6,068,588 AInternational Business Machines Corporation · 2000
- Method and apparatus for pumping blood55US 4,375,941 A1983
- Magnetically actuated fluid handling devices for microfluidic applications54US 6,408,884 B1University of Washington · 2002
- Fluid pump50US 4,321,020 ASperry Corporation · 1982