F04B 53/109
Inlet and outlet valve forming one unit
Official title: {inlet and outlet valve forming one unit}
F04B53/109 (Inlet and outlet valve forming one unit) appears on 148 US grants and 110 published applications in this corpus.
Search patents in F04B- Granted patents
- 148
- Published applications
- 110
- Assignees
- 111
- Inventors
- 286
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 2 |
| 2003 | 0 | 5 |
| 2004 | 2 | 2 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 2 | 3 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 3 | 9 |
| 2016 | 4 | 4 |
| 2017 | 2 | 6 |
| 2018 | 3 | 4 |
| 2019 | 5 | 15 |
| 2020 | 10 | 9 |
| 2021 | 7 | 3 |
| 2022 | 10 | 12 |
| 2023 | 7 | 5 |
| 2024 | 4 | 2 |
| 2025 | 13 | 10 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Counterflow guide for fluid end22 Sep 2026US 12,742,453 B2Gd Energy Products, LLC
- Valve assembly for a fluid pump4 Aug 2026US 12,698,768 B2Caterpillar Inc.
- Fluid routing plug19 May 2026US 12,631,166 B2Kerr Machine Co.
- Valve cartridge assembly for a fluid pump24 Mar 2026US 12,584,469 B2SPM Oil & Gas Inc.
- Check valve for RAT re-stow pump6 Jan 2026US 12,516,665 B2Hamilton Sundstrand Corporation
- Fluid ends and valve assemblies for high power pumps and related systems and methods1 Oct 2026US 2026/0298223 A1Vulcan Industrial Holdings, LLC
- Valve assembly and pump provided with said valve assembly23 Jul 2026US 2026/0210350 A1Mixtron S.R.L.
- Wear ring for a fluid end cartridge28 May 2026US 2026/0146600 A1SPM Oil & Gas Inc.
- Valve assembly for a fluid pump28 May 2026US 2026/0146603 A1SPM Oil & Gas Inc.
- Valve cartridge assembly for a fluid pump19 Feb 2026US 2026/0049603 A1SMP Oil & Gas Inc.
Most cited
By later US patents
- Two-valve thin plate micropump365US 5,171,132 ASeiko Epson Corporation · 1992
- Two valve micropump with improved outlet343US 5,224,843 AWestonbridge International Limited · 1993
- High pressure reciprocating pump apparatus214US 4,878,815 A1989
- Intravenous liquid pumping system and method191US 4,468,222 AValleylab, Inc. · 1984
- Double diaphragm pump and related methods126US 7,717,682 B2Purity Solutions LLC · 2010