F04B 43/067
The fluid being actuated directly by a piston
Official title: the fluid being actuated directly by a piston
F04B43/067 (The fluid being actuated directly by a piston) appears on 266 US grants and 195 published applications in this corpus.
Search patents in F04B- Granted patents
- 266
- Published applications
- 195
- Assignees
- 169
- Inventors
- 455
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 2 |
| 2002 | 8 | 4 |
| 2003 | 9 | 5 |
| 2004 | 4 | 3 |
| 2005 | 7 | 8 |
| 2006 | 3 | 6 |
| 2007 | 2 | 4 |
| 2008 | 4 | 6 |
| 2009 | 3 | 8 |
| 2010 | 3 | 7 |
| 2011 | 1 | 4 |
| 2012 | 7 | 5 |
| 2013 | 6 | 11 |
| 2014 | 3 | 12 |
| 2015 | 4 | 18 |
| 2016 | 10 | 8 |
| 2017 | 10 | 9 |
| 2018 | 9 | 6 |
| 2019 | 5 | 11 |
| 2020 | 7 | 10 |
| 2021 | 5 | 11 |
| 2022 | 8 | 6 |
| 2023 | 7 | 9 |
| 2024 | 4 | 11 |
| 2025 | 6 | 4 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Membrane pump device19 May 2026US 12,631,171 B2J. Wagner GmbH
- Protection of make-up system for high pressure bellows-style pump system28 Apr 2026US 12,612,909 B2Halliburton Energy Services.Inc.
- Electric diaphragm pump with offset slider crank28 Apr 2026US 12,612,911 B2Ingersoll-Rand Industrial U.S., Inc.
- Diaphragm pump8 Oct 2026US 2026/0309142 A1Ckd Corporation
- Capacity control for diaphragm compressor13 Aug 2026US 2026/0235116 A1
- A diaphragm compressor arrangement and use thereof30 Jul 2026US 2026/0218698 A1Cavendish Hydrogen A/S
- Double acting pump25 Jun 2026US 2026/0177042 A1Mhwirth AS
- Hydraulic Linkage Plunger Pushing Mechanism and Plunger Diaphragm Pump Using Same25 Jun 2026US 2026/0177047 A1Shanghai Nikuni Fluid System Co., Ltd.
Most cited
By later US patents
- Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge543US 6,416,293 B1DEKA Products Limited Partnership · 2002
- Flow metering cassette and controller403US 4,303,376 ABaxter Travenol Laboratories, Inc. · 1981
- Methods and systems for pulsed delivery of fluids from a pump296US 6,604,908 B1DEKA Products Limited Partnership · 2003
- System and method for measuring when fluid has stopped flowing within a line292US 6,041,801 ADEKA Products Limited Partnership · 2000
- Methods for controlling a pump's flow rate by pulsed discharge292US 6,749,403 B2DEKA Products Limited Partnership · 2004