F04B 7/0208
The distribution member forming both the inlet and discharge distributor for one
Official title: {the distribution member forming both the inlet and discharge distributor for one single pumping chamber}
F04B7/0208 (The distribution member forming both the inlet and discharge distributor for one) appears on 56 US grants and 55 published applications in this corpus.
Search patents in F04B- Granted patents
- 56
- Published applications
- 55
- Assignees
- 21
- Inventors
- 66
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 4 |
| 2019 | 1 | 2 |
| 2020 | 2 | 3 |
| 2021 | 3 | 2 |
| 2022 | 2 | 6 |
| 2023 | 8 | 6 |
| 2024 | 7 | 9 |
| 2025 | 13 | 10 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid end17 Sep 2026US 2026/0275971 A1Kerr Machine Co.
- Fluid routing plug17 Sep 2026US 2026/0275972 A1Kerr Machine Co.
- Wear ring for a fluid end cartridge28 May 2026US 2026/0146600 A1SPM Oil & Gas Inc.
- Fluid routing plug16 Apr 2026US 2026/0104039 A1Kerr Machine Co.
- Blood treatment systems and methods5 Feb 2026US 2026/0036122 A1DEKA Products Limited Partnership
Most cited
By later US patents
- Reciprocating infusion pump and directional adapter set for use therewith80US 4,065,230 AHart Associates, Inc. · 1977
- Automated control mechanisms in a hemodialysis apparatus53US 10,537,671 B2DEKA Products Limited Partnership · 2020
- Pump apparatus34US 4,534,713 A1985
- Reservoir fluids production apparatus and method28US 6,234,770 B1Alberta Research Council · 2001
- Internal combustion assisted hydraulic engine23US 4,097,198 A1978