Class F04B : POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
Subclass 1/02: Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (F04B 3/00 takes precedence; fluid-driven pumps F04B 9/08; control of reciprocating machines or pumps in general F04B 49/00) having two cylinders (in V-arrangement F04B 1/04)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11959468 | Apparatus for conveying thick matter | May 20, 19 | Apr 16, 24 | Putzmeister Engineering GmbH |
| 11946491 | Liquid feeder | Jun 25, 21 | Apr 02, 24 | Nidec Corporation |
| 11891987 | Piston pump and method for operating a piston pump | Dec 03, 19 | Feb 06, 24 | Friedrich W. Schwing GmbH |
| 11867162 | Precision, constant-flow reciprocating pump | Oct 10, 19 | Jan 09, 24 | SWISSINNOV PRODUCT SARL |
| 11859612 | Fluid transfer and depressurization system | Jun 16, 21 | Jan 02, 24 | TPE Midstream, LLC |
| 11859600 | Liquid feed pump and liquid chromatography device | Dec 03, 19 | Jan 02, 24 | HITACHI HIGH-TECH CORPORATION |
| 11828281 | Method for operating a piston compressor, and piston compressor | Nov 06, 18 | Nov 28, 23 | Linde GMBH |
| 11795939 | Pump installation member | May 25, 21 | Oct 24, 23 | Nitto Kohki Co. Ltd. |
| 11779945 | Portable airless sprayer | May 09, 23 | Oct 10, 23 | Graco Minnesota Inc. |
| 11759808 | Portable airless sprayer | May 09, 23 | Sep 19, 23 | Graco Minnesota Inc. |
| 11746765 | Micro piston pump | Feb 08, 22 | Sep 05, 23 | INSULET CORPORATION |
| 11655805 | Ultra-long stroke multi-cylinder reciprocating pump | Jul 23, 20 | May 23, 23 | SOUTHWEST PETROLEUM UNIVERSITY |
| 11623234 | Portable airless sprayer | Feb 05, 21 | Apr 11, 23 | Graco Minnesota Inc. |
| 11446690 | Portable airless sprayer | May 11, 22 | Sep 20, 22 | Graco Minnesota Inc. |
| 11446689 | Portable airless sprayer | May 11, 22 | Sep 20, 22 | Graco Minnesota Inc. |
| 11441551 | Portable hydraulic power unit | Apr 27, 18 | Sep 13, 22 | Graco Minnesota Inc. |
| 11434897 | Liquid delivery device | Jul 28, 17 | Sep 06, 22 | Shimadzu Corporation |
| 11371492 | Piston-valve engagement in fluid sprayers | Aug 14, 19 | Jun 28, 22 | Graco Minnesota Inc. |
| 11280290 | Method for controlling a fuel pump for a motor vehicle | Sep 22, 17 | Mar 22, 22 | Continental Automotive France; CONTINENTAL AUTOMOTIVE GMBH; |
| 11280327 | Micro piston pump | Aug 03, 18 | Mar 22, 22 | INSULET CORPORATION |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0125,311 | FLUID TRANSFER AND DEPRESSURIZATION SYSTEM | Dec 28, 23 | Apr 18, 24 | Not available |
| 2024/0011,473 | COMMON PLUNGER FOR A LINEAR ACTUATED PUMP | Jul 14, 21 | Jan 11, 24 | SPM Oil & Gas Inc.; Bosch Rexroth Corporation; |
| 2023/0213,030 | DUAL-PISTON FLUID PUMP | Dec 30, 21 | Jul 06, 23 | Not available |
| 2022/0266,280 | PORTABLE AIRLESS SPRAYER | May 11, 22 | Aug 25, 22 | Not available |
| 2022/0025,874 | PISTON PUMP AND METHOD FOR OPERATING A PISTON PUMP | Dec 03, 19 | Jan 27, 22 | Not available |
| 2021/0088,043 | INLINE PISTON PUMP | Sep 25, 20 | Mar 25, 21 | Not available |
| 2020/0332,781 | HYDRAULIC PRESSURE AMPLIFIER | Dec 18, 18 | Oct 22, 20 | Not available |
| 2019/0162,640 | Jet Fuel Thermal Oxidation Test Equipment | Nov 29, 17 | May 30, 19 | Not available |
| 2015/0300,330 | RECIPROCATING PUMPS FOR DOWNHOLE DELIQUIFICATION SYSTEMS AND PISTONS FOR RECIPROCATING PUMPS | Apr 15, 15 | Oct 22, 15 | BP CORPORATION NORTH AMERICA INC. |
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