F04B 13/02
Pumps specially modified to deliver fixed or variable measured quantities: of two
Official title: of two or more fluids at the same time
F04B13/02 (Pumps specially modified to deliver fixed or variable measured quantities: of two) appears on 374 US grants and 350 published applications in this corpus.
Search patents in F04B- Granted patents
- 374
- Published applications
- 350
- Assignees
- 203
- Inventors
- 614
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 3 |
| 2003 | 2 | 8 |
| 2004 | 7 | 13 |
| 2005 | 5 | 14 |
| 2006 | 9 | 14 |
| 2007 | 4 | 5 |
| 2008 | 4 | 13 |
| 2009 | 3 | 11 |
| 2010 | 3 | 8 |
| 2011 | 10 | 11 |
| 2012 | 5 | 7 |
| 2013 | 10 | 10 |
| 2014 | 4 | 5 |
| 2015 | 6 | 14 |
| 2016 | 5 | 17 |
| 2017 | 10 | 20 |
| 2018 | 20 | 21 |
| 2019 | 25 | 30 |
| 2020 | 29 | 19 |
| 2021 | 19 | 27 |
| 2022 | 15 | 18 |
| 2023 | 24 | 21 |
| 2024 | 26 | 21 |
| 2025 | 19 | 10 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Agricultural sampling system and related methods2 Jun 2026US 12,644,877 B2Precision Planting LLC
- Mixed-fluid delivery device12 May 2026US 12,623,242 B2Murata Manufacturing Co., Ltd.
- Fluid mixing by fluid supply lines with line-specific fluid pumps for liquid chromatography5 May 2026US 12,618,812 B2Agilent Technologies, Inc.
- Fluid system with a proppant mixing pump24 Mar 2026US 12,584,468 B2SPM Oil & Gas Inc.
- System and method for generating a drive signal10 Feb 2026US 12,545,572 B2DEKA Products Limited Partneship
- Agricultural sampling system and related methods17 Sep 2026US 2026/0276619 A1Precision Planting LLC
- Automated volume distribution and dosing system30 Jul 2026US 2026/0218691 A1Fenwal, Inc.
- Proportional volumetric dosing device30 Jul 2026US 2026/0219086 A1Mixtron S.R.L.
- Method and device for the dilution of liquids18 Jun 2026US 2026/0166499 A1Stratec SE
- Dosing apparatus for parenteral delivery of fluids5 Mar 2026US 2026/0061135 A1Shl Medical AG
Most cited
By later US patents
- Linear peristaltic pump249US 6,213,739 B1Niagara Pump Corporation · 2001
- Programmable, fluid pressure actuated blood processing systems and methods236US 6,949,079 B1Baxter International Inc. · 2005
- Fluid flow cassette with pressure actuated pump and valve stations198US 6,481,980 B1Baxter International Inc. · 2002
- Cassette system integrated apparatus195US 8,499,780 B2DEKA Products Limited Partnership · 2013
- Fluid pressure actuated blood pumping systems and methods with continuous inflow and pulsatile outflow conditions145US 6,723,062 B1Baxter International Inc. · 2004