| Patents for F04D 7 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (4,105) |
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| 01/13/1998 | US5707218 Implantable electric axial-flow blood pump with blood cooled bearing |
| 01/08/1998 | DE19650910C1 Compressor for gases with hydrogen sulphide constituents |
| 12/29/1997 | EP0813655A1 Pump for conveying hot media |
| 12/24/1997 | WO1997048833A1 Method and apparatus for removing bottom dross from molten metal |
| 12/18/1997 | WO1997047889A1 Rotodynamic pump |
| 12/11/1997 | WO1997046806A1 Submerged motor pump |
| 11/29/1997 | CA2206485A1 Sensor apparatus for pumps for pumping molten metal |
| 11/25/1997 | US5690254 Device for operating pumps in an installation for the foaming of polyurethan |
| 11/19/1997 | EP0807210A1 A continuous dynamic mixing system and methods for operating such system |
| 11/13/1997 | WO1997042413A1 Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method |
| 11/11/1997 | US5685701 Bearing arrangement for molten aluminum pumps |
| 10/30/1997 | WO1997040276A1 Molten metal impeller |
| 10/23/1997 | WO1997039178A1 System for feeding a suspension to a pressurized vessel |
| 10/22/1997 | EP0802610A2 High temperature motor pump and method for operating thereof |
| 10/16/1997 | DE19713854A1 Flow assisting device for piped liquids which are transferred from one container to another |
| 10/15/1997 | EP0801229A2 Pump |
| 10/15/1997 | CN2264817Y Granular thick liquid material pump |
| 10/14/1997 | US5676520 Method and apparatus for inhibiting oxidation in pumps for pumping molten metal |
| 10/07/1997 | US5674057 For mixing liquid waste |
| 10/02/1997 | WO1997036044A1 Method and device at the pumping of a medium |
| 09/24/1997 | EP0774045A4 Centrifugal chopper pump |
| 09/23/1997 | CA2166403C Pump with fluid bearing |
| 09/18/1997 | DE19609712A1 Pump especially for waste water containing sludge |
| 09/16/1997 | US5667362 Pump system and method for operating the same |
| 08/27/1997 | CN2260906Y Centrifugal pump for air feeding powdered material |
| 08/21/1997 | WO1997030289A1 Rotating machine |
| 08/21/1997 | WO1997030249A1 Material outfeeding device for vehicles |
| 08/19/1997 | US5659214 Submersible canned motor transfer pump |
| 07/30/1997 | CN1035526C Anticorrosion nucleated glass pump |
| 07/15/1997 | CA2051927C Vane apparatus for clog resistant pump |
| 07/10/1997 | WO1997024596A1 Method and apparatus for determining physical variables of a slurry or liquid |
| 06/25/1997 | EP0780578A1 Pump |
| 06/19/1997 | WO1997021927A1 Centrifugal pump |
| 06/18/1997 | CN2256477Y Sludge pump |
| 06/03/1997 | US5634770 Molten metal pump with vaned impeller |
| 06/03/1997 | US5634769 Guide apparatus for centrifugal pumps |
| 05/28/1997 | EP0677148A4 Pump impeller and centrifugal slurry pump incorporating same. |
| 05/21/1997 | EP0774045A1 Centrifugal chopper pump |
| 05/14/1997 | EP0668968B1 Apparatus for pumping a slurry |
| 05/07/1997 | DE19541093A1 Pump for metal alloy melting furnace |
| 05/06/1997 | US5626460 Centrifugal pump system with integrated heat barrier |
| 04/29/1997 | US5624058 Apparatus for pumping a slurry |
| 04/23/1997 | CN2252903Y Heat conducting oil pump having special sealing and radiating structure |
| 04/22/1997 | US5622481 Shaft coupling for a molten metal pump |
| 04/16/1997 | EP0768466A1 Electrically-powered water-immersed pump |
| 04/10/1997 | WO1997013071A1 Aeration system |
| 04/10/1997 | CA2232735A1 Aeration system |
| 04/09/1997 | EP0633982B1 Apparatus for pumping liquids |
| 04/09/1997 | CN1147064A Submerged pump |
| 04/08/1997 | US5618166 Submersible pump for pumping radioactive liquids |
| 04/02/1997 | CN2251059Y Concentrated sulfuric acid cantilever pump |
| 04/01/1997 | US5615997 Pump for pumping fibrous pulp suspension |
| 03/27/1997 | WO1997011469A1 Internal pump |
| 03/19/1997 | EP0762921A1 Dual impeller pump |
| 03/13/1997 | WO1997009482A1 Pump for fibrous pulp suspension with means for separating gas from the suspension |
| 03/05/1997 | EP0760427A1 High capacity, large sphere passing, slurry pump |
| 03/05/1997 | EP0660904B1 Centrifugal pump |
| 03/04/1997 | US5607233 Continuous dynamic mixing system |
| 02/25/1997 | US5605442 Centrifugal pump for pumping fiber suspensions |
| 02/18/1997 | US5603831 Used with an aquarium filter |
| 01/28/1997 | US5597289 Dynamically balanced pump impeller |
| 01/22/1997 | EP0754865A2 Submerged pump |
| 01/07/1997 | US5591001 Aeration system |
| 12/24/1996 | US5586863 Molten metal pump with vaned impeller |
| 12/19/1996 | WO1996040555A1 A fluid propulsion system for accelerating and directionally controlling a fluid |
| 12/18/1996 | CN2242983Y Centrifigual high-pressure mud pump |
| 12/17/1996 | USRE35404 Ignition-source free fuel pump |
| 12/12/1996 | WO1996039583A1 Method of controlling the function of a centrifugal pump and vacuum pump combination, and a gas-separating centrifugal pump |
| 12/12/1996 | WO1996032591A3 Pump for conveying a moist pulp |
| 12/11/1996 | EP0746683A1 Pump with fluid bearing |
| 12/08/1996 | CA2168508A1 Method and apparatus for inhibiting oxidation in pumps for pumping molten metal |
| 12/04/1996 | CN1033466C 离心泵 Centrifugal |
| 11/27/1996 | CN1136644A Removing wall structure of fiber |
| 11/05/1996 | US5571001 Electrically-powered water-immersed pump |
| 10/30/1996 | EP0740079A1 A submersible canned motor mixing pump |
| 10/30/1996 | EP0740078A1 A submersible canned motor transfer pump |
| 10/30/1996 | EP0740075A1 Screw pump |
| 10/24/1996 | WO1996033007A1 Device for admixing a first fluid into a second fluid |
| 10/17/1996 | WO1996032591A2 Pump for conveying a moist pulp |
| 10/17/1996 | EP0746683A4 Pump with fluid bearing |
| 10/17/1996 | CA2217724A1 Pump for conveying a moist pulp |
| 10/09/1996 | EP0735913A1 Apparatus and process for pumping and separating a mixture of gas and liquid |
| 09/25/1996 | EP0733805A1 Fibres repelling wall-shape design |
| 09/25/1996 | CN1131978A Turbo-machine with reduced attrition |
| 09/24/1996 | US5558505 Molten metal pump support post and apparatus for removing it from a base |
| 09/12/1996 | WO1996027740A1 Pump for conveying hot media |
| 09/11/1996 | EP0731280A1 Centrifugal pump assembly with integrated heat barrier |
| 09/11/1996 | CN1130725A Liquid pump with degasser and integrated vapor recovery option |
| 09/04/1996 | EP0730094A1 Variable level suction device |
| 09/04/1996 | CA2170833A1 Variable level suction device |
| 09/04/1996 | CA2170832A1 Submersible canned motor transfer pump |
| 09/04/1996 | CA2170831A1 Submersible canned motor mixer pump |
| 08/28/1996 | CN1129929A Transporting and metering particulate material |
| 08/20/1996 | CA2052012C Method and an apparatus for separating gas from solids-containing liquid |
| 08/14/1996 | EP0725752A1 Transporting and metering particulate material |
| 08/14/1996 | CN2232995Y Magnetic driving propane booster pump |
| 08/13/1996 | US5545015 Self-cooled and removable integrated cryogenic liquid pump |
| 08/13/1996 | US5545005 Centrifugal pump |
| 08/08/1996 | WO1996023977A1 A continuous dynamic mixing system and methods for operating such system |
| 07/31/1996 | EP0723476A1 Centrifugal liquid pump with internal gas injection assembly |