Description
Class F04D : NON-POSITIVE-DISPLACEMENT PUMPS
Subclass 9/00: Priming; Preventing vapour lock
F04D 9/00
Sub-Class
Stats
- 84 US PATENTS IN FORCE
- 10 US APPLICATIONS PENDING
- 31 Total Patent Owners
- 221 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12196227 | Pump | Feb 02, 23 | Jan 14, 25 | Spike Brewing LLC |
| 12135044 | Multiphase pump | Sep 03, 19 | Nov 05, 24 | SULZER MANAGEMENT AG |
| 12104612 | Systems and methods for maintaining the prime of a pump | May 06, 24 | Oct 01, 24 | Purdy Enterprises Inc. |
| 12092125 | Pump device comprising a radial bearing | Feb 16, 22 | Sep 17, 24 | HELLA GMBH & CO. KGAA |
| 12092128 | Boundary-layer pump and method of use | May 12, 23 | Sep 17, 24 | Not available |
| 11982295 | Pumping device for pumping liquids, comprising a centrifugal pump with a radially pumping pump wheel with a hollow center | Aug 29, 19 | May 14, 24 | Fresenius Medical Care Deutschland GmbH |
| 11746795 | Centrifugal pump device | Jun 21, 21 | Sep 05, 23 | GRUNDFOS HOLDING A/S |
| 11725616 | Sealing ring gland and fuel pump including the same | Mar 15, 22 | Aug 15, 23 | DELPHI TECHNOLOGIES IP LIMITED |
| 11719243 | Impeller rotor configured with wear resistant seal land | Aug 06, 21 | Aug 08, 23 | PRATT & WHITNEY CANADA CORP. |
| 11698066 | Pressure-controlling device, and pressure-using apparatus | Nov 21, 19 | Jul 11, 23 | Murata Manufacturing Co Ltd. |
| 11698073 | Swimming pool and spa pumps configured to improve priming performance | Mar 15, 21 | Jul 11, 23 | ZODIAC POOL SYSTEMS LLC |
| 11560896 | Device for protecting an electric pump against overpressures | Jul 22, 20 | Jan 24, 23 | DAB Pumps S.p.A |
| 11555497 | Quick startup device for centrifugal pump | Feb 25, 22 | Jan 17, 23 | JIANGSU UNIVERSITY |
| 11421518 | Apparatuses and systems for regulating flow from a geological formation, and related methods | Jul 20, 18 | Aug 23, 22 | FORUM US, INC. |
| 11415137 | Swimming pool pump with an inlet deflector and variable size impeller | Mar 02, 18 | Aug 16, 22 | Not available |
| 11389584 | Priming system for infusion devices | Jul 06, 17 | Jul 19, 22 | Avent, Inc. |
| 11353028 | Electric submersible pump with discharge recycle | Oct 03, 18 | Jun 07, 22 | Halliburton Energy Services, Inc. |
| 11319966 | Motor vehicle auxiliary power unit vacuum pump | Aug 15, 16 | May 03, 22 | PIERBURG PUMP TECHNOLOGY GMBH |
| 11313209 | Self-orienting gas evading intake for submersible pumps | Feb 23, 18 | Apr 26, 22 | Halliburton Energy Services, Inc. |
| 11268516 | Gas-lock re-prime shaft passage in submersible well pump and method of re-priming the pump | Nov 08, 19 | Mar 08, 22 | Baker Hughes Holdings LLC |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0090,832 | BLOOD PUMP WITH IMPROVED LEAKAGE CONTROL | Apr 19, 24 | Mar 20, 25 | Abiomed Inc. |
| 2024/0426,302 | INTAKES AND GAS SEPARATORS FOR DOWNHOLE PUMPS, AND RELATED APPARATUSES AND METHODS | May 14, 24 | Dec 26, 24 | Not available |
| 2024/0376,896 | METHOD FOR PERFORMING PRIMING OF A SUBMERSIBLE PUMP | Sep 26, 22 | Nov 14, 24 | Xylem Europe GmbH |
| 2024/0229,796 | INTAKES AND GAS SEPARATORS FOR DOWNHOLE PUMPS, AND RELATED APPARATUSES AND METHODS | Mar 08, 22 | Jul 11, 24 | Not available |
| 2024/0133,381 | INTAKES AND GAS SEPARATORS FOR DOWNHOLE PUMPS, AND RELATED APPARATUSES AND METHODS | Mar 08, 22 | Apr 25, 24 | Not available |
| 2022/0290,673 | Pumping System | Sep 18, 20 | Sep 15, 22 | Not available |
| 2019/0271,320 | SWIMMING POOL PUMP WITH AN INLET DEFLECTOR AND VARIABLE SIZE IMPELLER | Mar 02, 18 | Sep 05, 19 | Not available |
| 2017/0218,959 | Barrel-Type Pump with Venting Device and Associated Method | Jul 22, 15 | Aug 03, 17 | KSB AKTIENGESELLSCHAFT |
| 2016/0186,758 | IMPELLER WITH AXIALLY CURVING VANE EXTENSIONS TO PREVENT AIRLOCK | Aug 06, 15 | Jun 30, 16 | FLOW CONTROL LLC. |
| 2015/0247,501 | ANTI-AIRLOCK VALVE ASSEMBLY | Feb 28, 14 | Sep 03, 15 | FLOW CONTROL LLC. |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 37 Months (last 2 years Issuances)
- 37 Months (last 5 years Issuances)