F04B 15/00
Pumps adapted to handle specific fluids
Official title: Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
F04B15/00 (Pumps adapted to handle specific fluids) appears on 1,396 US grants and 1,526 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,396
- Published applications
- 1,526
- Assignees
- 735
- Inventors
- 2,781
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 9 | 0 |
| 1984 | 11 | 0 |
| 1985 | 16 | 0 |
| 1986 | 17 | 0 |
| 1987 | 12 | 0 |
| 1988 | 11 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 10 | 0 |
| 1992 | 16 | 0 |
| 1993 | 17 | 0 |
| 1994 | 17 | 0 |
| 1995 | 11 | 0 |
| 1996 | 16 | 0 |
| 1997 | 20 | 0 |
| 1998 | 14 | 0 |
| 1999 | 11 | 0 |
| 2000 | 13 | 0 |
| 2001 | 20 | 2 |
| 2002 | 16 | 10 |
| 2003 | 14 | 13 |
| 2004 | 11 | 23 |
| 2005 | 5 | 15 |
| 2006 | 16 | 23 |
| 2007 | 10 | 17 |
| 2008 | 8 | 28 |
| 2009 | 15 | 26 |
| 2010 | 12 | 37 |
| 2011 | 14 | 23 |
| 2012 | 13 | 37 |
| 2013 | 25 | 33 |
| 2014 | 22 | 45 |
| 2015 | 33 | 57 |
| 2016 | 25 | 78 |
| 2017 | 31 | 85 |
| 2018 | 57 | 93 |
| 2019 | 76 | 104 |
| 2020 | 77 | 117 |
| 2021 | 97 | 123 |
| 2022 | 109 | 132 |
| 2023 | 109 | 121 |
| 2024 | 117 | 116 |
| 2025 | 103 | 93 |
| 2026 | 67 | 75 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid pump assembly6 Oct 2026US 12,753,748 B2
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages15 Sep 2026US 12,736,035 B2
- Fluid compression apparatus and filling station8 Sep 2026US 12,729,104 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Transfer pump assembly8 Sep 2026US 12,729,669 B2Graco Minnesota Inc.
- Cryogenic liquid reciprocating pump with a cylinder structure for cooling assistance1 Sep 2026US 12,723,577 B2Korea Institute of Machinery & Materials
- Proportional volumetric dosing unit8 Oct 2026US 2026/0309135 A1Mixtron S.R.L.
- Bellows pump for liquid metals8 Oct 2026US 2026/0309143 A1Westinghouse Electric Corp.
- Active checked multiple displacer assembly1 Oct 2026US 2026/0298217 A1Graco Minnesota Inc.
- Pump for cryogenic liquid1 Oct 2026US 2026/0298224 A1
- Through-Hardened Valve Seat for Hydraulic Fracturing1 Oct 2026US 2026/0298349 A1Apex Industrial LLC
Most cited
By later US patents
- Quintuplex mud pump319US 8,083,504 B2Weatherford/Lamb, Inc. · 2011
- Quadraplex fluid pump268US 4,470,771 ATowler Hydraulics, Inc. · 1984
- Remote monitoring for hydraulic fracturing equipment248US 9,840,901 B2U.S. Well Services, LLC · 2017
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018
- Pump system and method of starting pump174US 10,221,856 B2BJ Services Company · 2019