F04B 2205/18
Pressure in a control cylinder/piston unit
F04B2205/18 (Pressure in a control cylinder/piston unit) appears on 26 US grants and 18 published applications in this corpus.
Search patents in F04B- Granted patents
- 26
- Published applications
- 18
- Assignees
- 18
- Inventors
- 58
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 4 |
| 2020 | 0 | 1 |
| 2021 | 1 | 4 |
| 2022 | 2 | 0 |
| 2023 | 4 | 3 |
| 2024 | 1 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control arrangement and method for controlling a sensorless membrane pump16 Jun 2026US 12,655,835 B2Eppendorf AG
- Diaphragm position control system10 Jun 2025US 12,326,142 B2Wanner Engineering, Inc.
- Variable displacement pumps25 Feb 2025US 12,234,816 B2Hamilton Sundstrand Corporation
- Variable positive displacement pump actuator systems28 May 2024US 11,994,117 B2Hamilton Sundstrand Corporation
- Method of controlling the hydraulic fluid pressure of a diaphragm compressor14 Nov 2023US 11,815,081 B2Nel Hydrogen A/S
- Expandable, inner liner pump22 Jan 2026US 2026/0022690 A1Viking Pump, Inc.
- Control arrangement and method for controlling a sensorless membrane pump27 Jun 2024US 2024/0209847 A1Eppendorf AG
- Diaphragm position control system28 Sep 2023US 2023/0304487 A1Wanner Engineering, Inc.
- Variable displacement pumps27 Apr 2023US 2023/0130997 A1Hamilton Sundstrand Corporation
- Variable positive displacement pump actuator systems6 Apr 2023US 2023/0105578 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Structure of linear compressor44US 6,084,320 AMatsushita Refrigeration Company · 2000
- Fuel feeding apparatus for internal combustion engine and vehicle using the fuel feeding apparatus30US 5,884,597 AHitachi, Ltd. · 1999
- Structure of linear compressor30US 6,153,951 AMatsushita Refrigeration Company · 2000
- Diesel engine fuel injection system22US 4,463,727 ARobert Bosch GmbH · 1984
- Variable pump control for hydraulic fan drive20US 6,179,570 B2Caterpillar Inc. · 2001