| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 11/06/2007 | CA2435063C Turbo pump |
| 11/06/2007 | CA2400602C Pressure boost pump |
| 10/31/2007 | CN200968313Y Fire-fighting pump |
| 10/31/2007 | CN200968289Y Horizontal middle opening multilevel petroleum pipeline pump |
| 10/31/2007 | CN200968288Y Stamping pump |
| 10/24/2007 | CN200964953Y Horizontal split multi-stage diffuser pump |
| 10/24/2007 | CN200964952Y Liquid pump |
| 10/23/2007 | USRE39891 V-blade impeller design for a regenerative turbine |
| 10/23/2007 | CA2339818C Fluid pump |
| 10/23/2007 | CA2301761C Pump impeller and method |
| 10/18/2007 | WO2007115471A1 A multi-channels impeller centrifugal pump |
| 10/03/2007 | EP1838453A1 Degassing centrifugal apparatus with sensor |
| 09/27/2007 | US20070224040 Centrifugal Pump and Method of Manufacturing the Same |
| 09/26/2007 | CN200952475Y Horizontal multistage pump |
| 09/26/2007 | CN101042142A Rotary blower and aspirator having a modifiable conformation |
| 09/26/2007 | CN100339600C 泵装置 Pump device |
| 09/19/2007 | CN101038000A Water pump with housing/impeller to enhance seal performance |
| 09/19/2007 | CN101037998A Positive vortex highly effective high pressure pump |
| 09/13/2007 | US20070212238 Rotodynamic Fluid Machine |
| 09/12/2007 | EP1152963B1 Multiple channel system, apparatus and method for transporting particulate material |
| 09/12/2007 | CN200946570Y Balance type multiple-grade wearable centrifugal pump for mining |
| 09/11/2007 | US7267524 Fuel pump having single sided impeller |
| 09/07/2007 | WO2007098800A1 Water pump |
| 09/07/2007 | CA2612471A1 Water pump |
| 09/05/2007 | CN101031723A Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
| 09/05/2007 | CN101029643A Chaulmoogra inductive spiral |
| 09/05/2007 | CN100335795C Driving motor, especially for a pump |
| 08/30/2007 | DE102006009495A1 Wasserpumpe Water pump |
| 08/29/2007 | EP1826887A2 Methods and apparatus for using an electrical machine to transport fluids through a pipeline |
| 08/29/2007 | CN200940573Y Novel multistage pump |
| 08/29/2007 | CN200940572Y Multistage pump for punching stainless steel |
| 08/23/2007 | WO2007095537A1 Multi-stage compression system and method of operating the same |
| 08/23/2007 | US20070196207 Pressurizing centrifugal pump |
| 08/23/2007 | DE102004046224B4 Behältersystem mit einem in einem Behälter integrierten Pumpwerk einer Behälterpumpe Tank system with an integrated pump station in a container of a submersible pump |
| 08/22/2007 | CN2937572Y Multi-stage centrifugal pump |
| 08/22/2007 | CN2937561Y Structure between final vane and pump cover cavity in multi-stage centrifugal pipeline pump |
| 08/22/2007 | CN101021213A Multi-runner type vane centrifugal pump |
| 08/15/2007 | CN2934668Y Vane pump |
| 08/09/2007 | DE202004021162U1 Behältersystem Container system |
| 08/07/2007 | US7252703 Direct contact liquid air contaminant control system |
| 08/06/2007 | CA2547116A1 Contactless centrifugal pump |
| 08/02/2007 | CA2639931A1 High flow/dual inducer/high efficiency impeller for liquid applications including molten metal |
| 08/01/2007 | CN2929282Y Horizontal guide vane type multistage middle open centrifugal pump |
| 07/27/2007 | CA2575925A1 Centrifugal pump casing relief system |
| 07/26/2007 | WO2007082417A1 Food centrifugal pump formed by pressing and welding |
| 07/26/2007 | US20070172345 Screw-centrifugal pump |
| 07/25/2007 | CN2926587Y Laminated centrifugal pump |
| 07/25/2007 | CN2926586Y Cylindrical pipeline pump |
| 07/24/2007 | US7247001 Impeller |
| 07/17/2007 | US7244096 Curved blade oil scoop |
| 07/10/2007 | US7241114 Rotor for a centrifugal pump |
| 07/05/2007 | DE19905435B4 Tauchpumpe Submersible pump |
| 07/04/2007 | CN2918799Y Two-stage centrifugal pump |
| 07/03/2007 | CA2436920C Fluid-powered energy conversion device |
| 06/28/2007 | DE19513962B4 Radiale Kreiselpumpe Radial centrifugal pump |
| 06/27/2007 | CN2916195Y Centrifugal drainage pump |
| 06/27/2007 | CN2916193Y Tunnel type rotary jet pump |
| 06/26/2007 | US7234915 Sluice feeder |
| 06/21/2007 | DE102005060895A1 Centrifugal pump to circulate hot, gently gassing and/or gas-charged media with impeller producing pre-pressure before first side channel pump stage and intermediate stage embodied as peeler forming spiral emptying directly into this stage |
| 06/13/2007 | EP1795758A1 Impeller for a pump unit and pump unit |
| 06/13/2007 | CN1978919A Fire-extinguishing tangent pump |
| 06/06/2007 | CN1975170A Multi-sealing easy-to-maintenance efficient double-suction centrifugal pump |
| 05/30/2007 | CN2906142Y Highly-efficient energy-saving double-gear double-impeller and double-shaft water pump |
| 05/30/2007 | CN1971062A Centrifugal pump with eccentric structure |
| 05/23/2007 | EP1787028A1 Rotodynamic fluid machine |
| 05/23/2007 | CN2903501Y Horizontal multi step pump with axial force self balancing |
| 05/15/2007 | US7217084 Automotive fuel pump with pressure balanced impeller |
| 05/09/2007 | CN2898381Y Efficient and high-pressure energy-saving fluid conveyer |
| 05/09/2007 | CN2898378Y Two-purpose efficient self-suction centrifugal pump for land and water |
| 05/09/2007 | CN1959118A Drainage pump |
| 05/03/2007 | US20070097784 Process for the continuous production of emulsions |
| 05/02/2007 | CN2895819Y Combined balancing apparatus for multi-stage pump |
| 04/25/2007 | CN2893243Y Multistage centrifugal pump |
| 04/25/2007 | CN2893233Y High pressure spiral-tube pump |
| 04/25/2007 | CN1952404A Dischare pump |
| 04/24/2007 | US7207774 Centrifugal fan and casing thereof |
| 04/17/2007 | CA2238582C Compact interbowl assembly coupler for vertical turbine pumps |
| 04/10/2007 | CA2389406C Centrifugal submersible pump |
| 04/04/2007 | CN1942673A Centrifugal pump and method of manufacturing the same |
| 04/03/2007 | US7198457 Single-shaft multistage pump |
| 03/29/2007 | US20070069050 Two stage sewage grinder pump |
| 03/28/2007 | CN1938522A Pressurizing cenrrifugal pump |
| 03/28/2007 | CN1936336A Drainage pump |
| 03/22/2007 | WO2007030971A1 Water pump |
| 03/07/2007 | CN2876383Y Multiflow passage impeller centrifugal pump |
| 03/07/2007 | CN1926338A Screw-centrifugal pump |
| 02/28/2007 | CN2874087Y Screw transport pump |
| 02/27/2007 | CA2241030C Water aerator and circulation system |
| 02/14/2007 | CN2869391Y Straight-path pump |
| 02/13/2007 | US7175383 Regenerative fluid pump and stator for the same |
| 02/08/2007 | WO2007014876A1 Hydraulic pump |
| 02/07/2007 | CN1908442A 改进的单级离心泵 Improved single-stage centrifugal pump |
| 01/31/2007 | CN1904387A Improved booster device for shielding pump |
| 01/31/2007 | CN1904375A Vertical single stage centrifugal pump |
| 01/25/2007 | WO2007009156A1 Improved impeller arrangement and pump |
| 01/17/2007 | EP1743101A1 Centrifugal pump and method of manufacturing the same |
| 01/17/2007 | CN2859041Y Water supplying pump for pressure boiler |
| 01/17/2007 | CN2859040Y High-pressure self-balancing two-housing segment centrifugal pump |
| 01/16/2007 | CA2204664C System for compressing a fluid in several phases with a centrifugal pump |
| 01/10/2007 | CN1892046A Dual-scroll pump |