F04B 43/107
The fluid being actuated directly by a piston
Official title: the fluid being actuated directly by a piston
F04B43/107 (The fluid being actuated directly by a piston) appears on 72 US grants and 46 published applications in this corpus.
Search patents in F04B- Granted patents
- 72
- Published applications
- 46
- Assignees
- 48
- Inventors
- 115
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 6 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 4 | 2 |
| 2012 | 2 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 4 |
| 2015 | 1 | 1 |
| 2016 | 3 | 3 |
| 2017 | 3 | 4 |
| 2018 | 3 | 1 |
| 2019 | 4 | 2 |
| 2020 | 3 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 2 | 4 |
| 2025 | 1 | 3 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Long-life non-contact pump12 May 2026US 12,624,690 B2
- Protection of make-up system for high pressure bellows-style pump system28 Apr 2026US 12,612,909 B2Halliburton Energy Services.Inc.
- Cooling for bellows pump14 Apr 2026US 12,601,343 B2Halliburton Energy Services.Inc.
- Direct connect piston-driven bellows pump23 Sep 2025US 12,421,953 B2Halliburton Energy Services.Inc.
- Pump and associated system and methods9 Jul 2024US 12,031,530 B2Mhwirth AS
- Long-life non-contact pump11 Sep 2025US 2025/0283458 A1
- Check valve and compact pump system3 Jul 2025US 2025/0215984 A1Equilibar, LLC
- Liquid supply device8 May 2025US 2025/0146485 A1
- Piston diaphragm pump12 Dec 2024US 2024/0410351 A1Feluwa Pumpen GmbH
- Direct connect piston-driven bellows pump14 Nov 2024US 2024/0376880 A1Halliburton Energy Services.Inc.
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
- Methods and systems for pulsed delivery of fluids from a pump296US 6,604,908 B1DEKA Products Limited Partnership · 2003
- Methods for controlling a pump's flow rate by pulsed discharge292US 6,749,403 B2DEKA Products Limited Partnership · 2004
- Pumping cartridge having an integrated filter and method for filtering a fluid with the cartridge244US 6,905,479 B1DEKA Products Limited Partnership · 2005
- Bellows-type pump and metering system73US 4,483,665 ATritec Industries, Inc. · 1984