F04B 43/0018
The periphery of the flexible member being not fixed to the pump-casing
Official title: {the periphery of the flexible member being not fixed to the pump-casing, but acting as a valve}
F04B43/0018 (The periphery of the flexible member being not fixed to the pump-casing) appears on 22 US grants and 18 published applications in this corpus.
Search patents in F04B- Granted patents
- 22
- Published applications
- 18
- Assignees
- 19
- Inventors
- 35
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 3 | 0 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Cyclic operating pumping method and system18 Mar 2025US 12,253,073 B2Altop Patents III B.V.
- Pumping system in the lab-on-a-chip field18 Feb 2025US 12,228,122 B2Centre National De La Recherche Scientifique
- Linear peristaltic metering pump3 Oct 2023US 11,773,834 B2Hunan Zenithsun Technology Co., Ltd
- Electro-mechanical pump for negative-pressure treatment12 Sep 2023US 11,752,252 B2KCI Licensing, Inc.
- Controlled crinkle diaphragm pump16 May 2023US 11,649,815 B2Ams R&D SAS
- Device for generating a fluid flow7 Nov 2024US 2024/0369055 A1FinX
- Pumping system in the lab-on-a-chip field8 Feb 2024US 2024/0044322 A1Centre National De La Recherche Scientifique
- Cyclic operating pumping method and system8 Sep 2022US 2022/0282723 A1Altop Patents III B.V.
- Linear cleaning peristaltic metering pump6 Jan 2022US 2022/0003228 A1Hunan Zenithsun Technology Co., Ltd
- Undulating-membrane fluid circulator10 Jun 2021US 2021/0172429 A1CorWave SA
Most cited
By later US patents
- Small-sized pump52US 4,801,249 AOhken Seiko Co., Ltd. · 1989
- Constrained wave pump43US 4,488,854 A1984
- Trigger actuated pump38US 4,101,057 AEthyl Corporation · 1978
- Vibrating membrane fluid circulator34US 6,361,284 B12002
- Diaphragm pump with a crinkle diaphragm of improved efficiency22US 8,714,944 B2Ams R&D SAS · 2014