F04B 43/028
With in- or outlet valve arranged in the plate-like flexible member
Official title: {with in- or outlet valve arranged in the plate-like flexible member (valve arranged in the piston F04B53/12)}
F04B43/028 (With in- or outlet valve arranged in the plate-like flexible member) appears on 53 US grants and 62 published applications in this corpus.
Search patents in F04B- Granted patents
- 53
- Published applications
- 62
- Assignees
- 54
- Inventors
- 138
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 2 |
| 2004 | 3 | 0 |
| 2005 | 0 | 2 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 3 |
| 2011 | 0 | 3 |
| 2012 | 2 | 0 |
| 2013 | 2 | 5 |
| 2014 | 3 | 3 |
| 2015 | 0 | 3 |
| 2016 | 4 | 3 |
| 2017 | 3 | 5 |
| 2018 | 2 | 6 |
| 2019 | 5 | 5 |
| 2020 | 6 | 2 |
| 2021 | 3 | 2 |
| 2022 | 2 | 5 |
| 2023 | 1 | 0 |
| 2024 | 3 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Micropump113US 4,152,098 A1979
- Microfluidic pump and valve structures and fabrication methods78US 7,832,429 B2Rheonix, Inc. · 2010
- Method and device for conveying media49US 7,040,869 B22006
- Magnetically driven micropump39US 9,523,358 B2The Board of Trustees of the University of Illinois · 2016
- Dispensing pump32US 3,986,644 ADiamond International Corporation · 1976