Class F04D : NON-POSITIVE-DISPLACEMENT PUMPS
Subclass 1/06: Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D 7/00; priming or boosting F04D 9/00; pumping liquids and elastic fluids at the same time F04D 31/00) Multi-stage pumps (F04D 1/02 takes precedence)
| 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 |
| 12234831 | Pump shaft for a multi-stage pump | Jun 22, 20 | Feb 25, 25 | KSB SE & Co. KGaA |
| 12228137 | Manufacture of an impeller in a hybrid process | Mar 04, 22 | Feb 18, 25 | KSB SE & Co. KGaA |
| 12188406 | Axial-centrifugal contra-rotating light weight, compact compression system | Oct 19, 21 | Jan 07, 25 | Indian Institute of Technology Kharagpur |
| 12188485 | Pump assembly | Nov 15, 21 | Jan 07, 25 | KSB SE & Co. KGaA |
| 12173721 | Bearing assemblies, apparatuses, devices, systems, and methods including bearings | Dec 13, 21 | Dec 24, 24 | CHAMPIONX LLC |
| 12168986 | Self-priming assembly for use in a multi-stage pump | Jan 24, 23 | Dec 17, 24 | Pentair Flow Technologies, LLC |
| 12152591 | Barrel casing pump and method for manufacturing a barrel casing pump | Mar 04, 20 | Nov 26, 24 | KSB SE & Co. KGaA |
| 12135040 | Centrifugal well pump with threadedly coupled diffusers | Jul 22, 22 | Nov 05, 24 | Schlumberger Technology Corporation |
| 12135044 | Multiphase pump | Sep 03, 19 | Nov 05, 24 | SULZER MANAGEMENT AG |
| 12123416 | Compensation assemblies for fluid handling devices and related devices, systems, and methods | Sep 29, 23 | Oct 22, 24 | Flowserve Pte. Ltd. |
| 12078176 | Magnetic drive centrifugal pump | Oct 16, 19 | Sep 03, 24 | Eurosets S.R.L. |
| 12071898 | Fluid pump systems | Jul 30, 21 | Aug 27, 24 | HAMILTON SUNDSTRAND CORPORATION |
| 12066026 | Electric submersible pump (ESP) assembly with load absorbing coupling | Dec 15, 21 | Aug 20, 24 | Halliburton Energy Services, Inc. |
| 12025135 | Pump | Feb 26, 20 | Jul 02, 24 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 12025136 | Electrical submersible pumping systems | Mar 26, 20 | Jul 02, 24 | Schlumberger Technology Corporation |
| 12025150 | Multistage pump | Feb 03, 20 | Jul 02, 24 | SULZER MANAGEMENT AG |
| 12006948 | Pump device and cooling device | Feb 01, 22 | Jun 11, 24 | Nidec Corporation |
| 11994003 | Fallback prevention valve apparatus, system and method | Oct 11, 21 | May 28, 24 | Halliburton Energy Services, Inc. |
| 11988213 | Multistage pump and subsea pumping arrangement | Jul 23, 20 | May 21, 24 | SULZER MANAGEMENT AG |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0075,702 | MULTISTAGE CENTRIFUGAL PUMP FOR PUMPING FLUID, AN IMPELLER/ SHAFT ASSEMBLY AND A METHOD FOR ASSEMBLING AN IMPELLER/ SHAFT ASSEMBLY | Jan 24, 22 | Mar 06, 25 | Not available |
| 2025/0035,117 | PRESSURE BOOSTING DEVICE AND GAS WATER HEATER | Oct 10, 24 | Jan 30, 25 | Not available |
| 2025/0027,507 | MULTIPLE BLADE ROWS FOR IMPELLER AND DIFFUSER STAGES | Jul 22, 24 | Jan 23, 25 | Not available |
| 2024/0410,397 | SHORT IMPELLER FOR A TURBOMACHINE | Mar 18, 24 | Dec 12, 24 | Not available |
| 2024/0410,372 | ELECTRICAL SUBMERSIBLE PUMPING SYSTEMS | Jun 06, 24 | Dec 12, 24 | Not available |
| 2024/0392,798 | FLUID TURBINES | May 24, 24 | Nov 28, 24 | Not available |
| 2024/0384,634 | CENTRIFUGAL PUMP STAGE WITH RADIUSED IMPELLER FLOW PASSAGE EXIT FOR REDUCED EROSION | Jun 20, 24 | Nov 21, 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 |
| 2024/0360,840 | COMPOSITE CROSS-OVER DIFFUSER FOR A CENTRIFUGAL PUMP, CENTRIFUGAL PUMP COMPRISING THE SAME AND CORRESPONDING MANUFACTURING PROCESS | Aug 25, 22 | Oct 31, 24 | Not available |
| 2024/0309,874 | SYSTEM AND METHOD TO CONTROL ELECTRICAL SUBMERSIBLE PUMP DURING OIL AND GAS EXPLORATIONS | Mar 14, 23 | Sep 19, 24 | Not available |
| 2024/0271,625 | SYSTEMS AND METHODS OF PREDICTION AND MANAGEMENT OF SCALING ON COMPONENTS | Feb 09, 24 | Aug 15, 24 | Not available |
| 2024/0229,816 | LIQUID RING ROTOR | Sep 28, 23 | Jul 11, 24 | Not available |
| 2024/0175,339 | HIGH VOLUME AXIAL FLOW ELECTRIC SUBMERSIBLE PUMP (ESP) PUMP STAGE | Nov 30, 22 | May 30, 24 | Not available |
| 2024/0141,919 | CENTRIFUGAL PUMP STAGE DIFFUSER | Oct 26, 22 | May 02, 24 | Not available |
| 2024/0133,394 | LIQUID RING ROTOR | Sep 27, 23 | Apr 25, 24 | Not available |
| 2024/0093,698 | Production of a Diffusor as a Group of Channels | Nov 10, 21 | Mar 21, 24 | Not available |
| 2024/0026,884 | CENTRIFUGAL PUMP FOR PUMPING A MULTIPHASE SUSPENSION AND A GAS REMOVAL DEVICE FOR USE IN A CENTRIFUGAL PUMP | Oct 27, 21 | Jan 25, 24 | Not available |
| 2023/0114,352 | MULTISTAGE CENTRIFUGAL PUMP WITH TWO PARALLEL FLOWS OF PUMPED MEDIUM | Jan 31, 20 | Apr 13, 23 | Not available |
| 2021/0324,860 | COMPRESSOR AND CHILLER SYSTEM HAVING THE SAME | Apr 14, 21 | Oct 21, 21 | Not available |
| 2021/0025,399 | WATER PUMP MODULE | Jul 24, 20 | Jan 28, 21 | Not available |
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