Class F04D : NON-POSITIVE-DISPLACEMENT PUMPS
Subclass 7/02: Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (pumping liquids and elastic fluids at the same time F04D 31/00) of centrifugal type
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258979 | Method of preventing damage to a pump | Jan 02, 24 | Mar 25, 25 | AKER SOLUTIONS AS |
| 12213494 | Pump for pumping heat-sensitive fluids | Apr 18, 18 | Feb 04, 25 | SPX Flow Technology Danmark A/S |
| 12085092 | Auxiliary shaft seal flushing system of a centrifugal pump and an axial flow pump | Aug 27, 15 | Sep 10, 24 | TIANJIN CRDT FLUID CONTROL SYSTEM LTD. |
| 11920606 | Aircraft engine fuel pump | Jul 16, 21 | Mar 05, 24 | SAFRAN AIRCRAFT ENGINES |
| 11852163 | Single suction centrifugal blower | Apr 23, 21 | Dec 26, 23 | DENSO Corporation |
| 11781556 | High energy density turbomachines | Aug 26, 19 | Oct 10, 23 | The Texas A&M University System |
| 11448224 | Pump for immersion within a fluid reservoir | May 13, 22 | Sep 20, 22 | NUHN INDUSTRIES LTD. |
| 11377939 | Interlocking diffuser arrangement in electrical submersible pump | Mar 22, 21 | Jul 05, 22 | Baker Hughes Oilfield Operations LLC |
| 11371326 | Downhole pump with switched reluctance motor | Jun 01, 20 | Jun 28, 22 | Saudi Arabian Oil Company |
| 11339799 | Heat insulating vessel for low temperature liquefied gas pump | Nov 08, 17 | May 24, 22 | Kawasaki Jukogyo Kabushiki Kaisha |
| 11339804 | Self-cleaning pump | Aug 01, 18 | May 24, 22 | Liberty Pumps Inc. |
| 11319966 | Motor vehicle auxiliary power unit vacuum pump | Aug 15, 16 | May 03, 22 | PIERBURG PUMP TECHNOLOGY GMBH |
| 11131315 | Adjustable rigid spacer coupling | Nov 14, 18 | Sep 28, 21 | ITT MANUFACTURING ENTIRPISES LLC |
| 11124434 | In-liquid plasma device | Jul 03, 19 | Sep 21, 21 | NIHON SPINDLE MANUFACTURING CO., LTD. |
| 11118596 | Wear ring for use in a pump | Dec 15, 18 | Sep 14, 21 | Boulden Company, Inc. |
| 11002283 | Magnetic bearing for a turbomachine | Mar 17, 17 | May 11, 21 | Nuovo Pignone Tecnologie Srl |
| 10995751 | Lobe gear pump with inducer assembly and centrifugal pump having one fluid flow path | Oct 07, 16 | May 04, 21 | PMC LIQUIFLO EQUIPMENT CO., INC. |
| 10954952 | Centrifugal pump for cryogenic pumped media | Sep 18, 18 | Mar 23, 21 | Fives Cryomec AG |
| 10941778 | Motorized pump | Jul 24, 20 | Mar 09, 21 | Saudi Arabian Oil Company |
| 10907598 | Self-limiting regenerative pumping element start stage for high speed centrifugal engine fuel pump and associated method | Mar 07, 19 | Feb 02, 21 | EATON INTELLIGENT POWER LIMITED |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0100,704 | PUMP SYSTEM | Sep 20, 24 | Mar 27, 25 | Not available |
| 2025/0043,793 | PUMP FOR IMMERSION WITHIN A FLUID RESERVOIR | Oct 22, 24 | Feb 06, 25 | NUHN INDUSTRIES LTD. |
| 2024/0410,371 | SUBMERSIBLE PUMP | May 20, 24 | Dec 12, 24 | Not available |
| 2024/0384,725 | ELECTRIC PUMP ASSEMBLY, MANUFACTURING METHOD FOR INSTALLING SUCH A PUMP ASSEMBLY | Sep 02, 22 | Nov 21, 24 | Not available |
| 2024/0367,923 | A PUMPING SYSTEM AND METHOD | Jul 11, 24 | Nov 07, 24 | Not available |
| 2024/0328,433 | ADDITIVELY MANUFACTURED OPTIMIZED FUEL PUMP VOLUTE ENTRANCE | Mar 30, 23 | Oct 03, 24 | Not available |
| 2024/0011,492 | FLUID-PATH SWITCHING APPARATUS AND METHOD OF PREVENTING IDLING ROTATION OF SUBMERSIBLE PUMP | Aug 27, 21 | Jan 11, 24 | Not available |
| 2023/0020,149 | OFFSHORE WIND TURBINE WITH A FLUID SUPPLY ASSEMBLY | Jun 23, 22 | Jan 19, 23 | Not available |
| 2022/0381,252 | PUMP FOR IMMERSION WITHIN A FLUID RESERVOIR | Aug 11, 22 | Dec 01, 22 | NUHN INDUSTRIES LTD. |
| 2020/0080,563 | Mechanism for Driving the Blades of a Centrifugal Pump for Transporting Liquids and Living Fauna | Feb 19, 18 | Mar 12, 20 | Not available |
| 2015/0354,581 | ELECTRIC MOTOR FOR A WATER PUMP | Jun 03, 15 | Dec 10, 15 | SCHAEFFLER TECHNOLOGIES AG & CO. KG |
| 2014/0377,083 | COMPRESSOR SYSTEM FOR NATURAL GAS, METHOD OF COMPRESSING NATURAL GAS AND PLANT USING THEM | Jan 24, 13 | Dec 25, 14 | NUOVO PIGNONE SRL |
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