Class F04D : NON-POSITIVE-DISPLACEMENT PUMPS
Subclass 1/08: 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) the stages being situated concentrically
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12110909 | Vertical multi-stage pump | Sep 25, 20 | Oct 08, 24 | Ebara Corporation |
| 12006946 | Process fluid lubricated pump and pumping system | Nov 09, 21 | Jun 11, 24 | SULZER MANAGEMENT AG |
| 11873821 | Pump | Feb 26, 20 | Jan 16, 24 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 11846297 | Process fluid lubricated pump | Mar 23, 21 | Dec 19, 23 | SULZER MANAGEMENT AG |
| 11732718 | Multi-stage rotor | Sep 29, 20 | Aug 22, 23 | Not available |
| 11346364 | Multistage centrifugal fluid machine | Mar 05, 18 | May 31, 22 | Hitachi Industrial Products, Ltd. |
| 11323003 | Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow | Oct 30, 19 | May 03, 22 | Flowserve Management Company |
| 11293455 | Diffuser assembly for upward, downward and radial pump protection | May 31, 18 | Apr 05, 22 | Halliburton Energy Services, Inc. |
| 11286948 | Single-shaft turbo compressor | Aug 22, 17 | Mar 29, 22 | SIEMENS ENERGY GLOBAL GMBH & CO. KG |
| 11085451 | High viscosity pumping system and method of using same | Apr 10, 19 | Aug 10, 21 | Alkhorayef Petroleum Company Limited |
| 10830241 | Permanent magnet pump | Apr 17, 18 | Nov 10, 20 | Baker Hughes, a GE company, LLC |
| 10704559 | Vertical pump and urea synthesis plant | Nov 09, 17 | Jul 07, 20 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 10495102 | Impeller and pump using the impeller | Dec 23, 16 | Dec 03, 19 | JOHNSON ELECTRIC INTERNATIONAL AG |
| 9677560 | Centrifugal pump impeller support system and apparatus | Jul 10, 15 | Jun 13, 17 | SUMMIT ESP, LLC |
| 9133849 | Impeller vane with leading edge enhancement | Nov 09, 12 | Sep 15, 15 | BAKER HUGHES INCORPORATED |
| 9080572 | Centrifugal pump with secondary impeller and dual outlets | Dec 21, 12 | Jul 14, 15 | Not available |
| 9010353 | Gas lift valve having edge-welded bellows and captive sliding seal | Aug 04, 11 | Apr 21, 15 | WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
| 8777554 | Intermediate fan stage | Aug 27, 10 | Jul 15, 14 | GENERAL ELECTRIC COMPANY |
| 8641364 | Blade for an impeller wheel | Jan 23, 07 | Feb 04, 14 | Bew Betriebs und Entwicklung von Wasserkraftanlagen GmbH |
| 8382423 | Micro-scale and meso-scale hydraulically or pneumatically powered devices capable of rotational motion | Jul 07, 08 | Feb 26, 13 | MICROFABRICA INC. |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0167,478 | MOTOR PUMP, PUMP UNIT, AND METHOD OF BALANCING IMPELLER OF MOTOR PUMP | Jan 05, 22 | May 23, 24 | Not available |
| 2024/0141,900 | VERTICALLY SUSPENDED CENTRIFUGAL PUMP WITH INTEGRAL SPEED REDUCER | Oct 31, 23 | May 02, 24 | Not available |
| 2023/0243,354 | MODULAR COMPACT PUMP | Jun 21, 21 | Aug 03, 23 | Not available |
| 2017/0227,012 | ROTARY MACHINE | Sep 08, 14 | Aug 10, 17 | MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION |
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