| Patents for F04F 1 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (1,650) |
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| 08/19/2003 | US6607105 Stopper for wine or champagne preservation and dispensing apparatus |
| 08/12/2003 | US6604546 Hose-end chemical delivery system |
| 07/31/2003 | WO2003062596A1 Gas operated pump for hydrocarbon wells |
| 07/29/2003 | US6599096 Steam driven pump |
| 07/09/2003 | EP1325207A2 Gas operated pump for use in a wellbore |
| 06/18/2003 | CN2556409Y Multi-functional vacuum dirt-absorption tank for diesel engine |
| 06/11/2003 | CN1423061A Thermal decomposition actuating pump system |
| 06/05/2003 | WO2003046387A1 Method and device for producing a flame, in particular for a coloured flame lamp |
| 06/05/2003 | WO2003046386A1 Repressurizing dispenser for carbonated beverage containers |
| 06/05/2003 | WO2003045818A1 'wine or champagne preservation and dispensing apparatus' |
| 06/05/2003 | CA2468477A1 Method and device for producing a flame, in particular for a coloured flame lamp |
| 06/03/2003 | US6572340 Pressure motive pump assembly comprising a float, an over center linkage mechanism, and a pair of positive stop or abutment means for ensuring over center tripping action |
| 06/03/2003 | US6571918 Liquid pump and metering apparatus |
| 05/29/2003 | US20030098320 Stopper for wine or champagne preservation and dispensing apparatus |
| 05/27/2003 | US6568473 Gas lift valve with central body venturi |
| 05/21/2003 | EP1311766A2 Dual chamber liquid pump |
| 05/14/2003 | EP1309798A1 A system and method for compressing a fluid |
| 05/06/2003 | US6558128 Fluid well pumping system |
| 04/24/2003 | US20030077180 Air-operated pump with bladder-controlled inlet structure useful in floating-layer separation applications |
| 04/23/2003 | CN1412443A Mechanical equipment capable of converting solar wind energy into air pressure energy and using said pressure energy to lift water |
| 04/16/2003 | EP0749534B1 Engine coolant extractor/injector with double shut-off coupling |
| 04/16/2003 | CN2545412Y Pneumatic liquid conveying pump |
| 04/15/2003 | US6546949 Flexible bladder isolate injection solutions in storage containers; supplying accuracy |
| 04/15/2003 | US6546723 Hydropower conversion system |
| 04/10/2003 | US20030066289 Hydropower conversion system |
| 04/09/2003 | EP1300619A1 Orifice-built-in valve |
| 04/01/2003 | US6540105 Liquid dispenser |
| 03/25/2003 | US6537036 Flow amplifying pump apparatus |
| 03/25/2003 | US6536521 Multi-stage liquid elevator |
| 03/20/2003 | WO2003012406A9 Methods and systems for microfluidic processing |
| 03/13/2003 | US20030049137 Flow amplifying pump apparatus |
| 03/12/2003 | CN2539866Y Liquid heat power directional booster system |
| 03/06/2003 | WO2003019016A1 Method and apparatus for filling a storage vessel with compressed gas |
| 02/27/2003 | US20030039554 Method and apparatus for filling a storage vessel with compressed gas |
| 02/13/2003 | WO2003012288A1 Pulsation type water raising and falling equipment |
| 01/29/2003 | CN1393643A Liquid delivering apparatus |
| 01/21/2003 | US6508304 Multi-stage liquid elevator |
| 01/16/2003 | WO2003004127A1 Fluid injector with vent/proportioner ports |
| 01/15/2003 | CN1390612A Water intake unit of fire engine |
| 01/09/2003 | WO2002018781A8 Dual chamber liquid pump |
| 01/08/2003 | EP1272412A1 Method for conveying flowable substances |
| 01/02/2003 | EP1267692A1 Liquid dispenser |
| 01/01/2003 | CN2528999Y Wind pressure miniature engine oil pump |
| 12/25/2002 | CN1386986A Pneumatic water pump |
| 12/19/2002 | WO2001074225A9 Liquid dispenser |
| 12/11/2002 | EP1265014A1 Pump and over-center snap link |
| 12/11/2002 | EP1265013A1 Pump and over-center snap link |
| 12/05/2002 | US20020182089 Fluid well pumping system |
| 11/21/2002 | WO2002059485B1 Gas lift valve with central body ventury for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 11/14/2002 | US20020168268 Pneumatic microfluid driving system and method |
| 11/13/2002 | EP1185796A4 Gas pressurized liquid pump with intermediate chamber |
| 11/07/2002 | WO2002087839A1 Electrically powered concrete pump |
| 10/09/2002 | EP1155241A4 Gas displaced chamber lift system |
| 10/01/2002 | CA2290550C Conduit pump system to increase water flow capacity |
| 09/24/2002 | US6453935 Fluid injector with vent/proportioner ports |
| 08/29/2002 | DE10108506A1 Dosierpumpe Metering pump |
| 08/22/2002 | US20020112758 Pressure vessel systems and methods for dispensing liquid chemical compositions |
| 08/21/2002 | EP1232803A2 Water jet apparatus and method therefor |
| 08/20/2002 | US6435838 Fluid well pump |
| 08/15/2002 | US20020109020 Water jet |
| 08/08/2002 | DE10105506A1 Vorrichtung zur Erzeugung von Druckluft An apparatus for generating compressed air |
| 08/06/2002 | US6428285 Hydraulic delivery device |
| 08/01/2002 | WO2002059485A1 Gas lift valve with central body ventury for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 08/01/2002 | WO2002058885A1 Pressure vessel systems and methods for dispensing liquid chemical compositions |
| 07/31/2002 | CN2503246Y Water pump with two high pressure chambers |
| 07/25/2002 | US20020096332 Gas lift valve with central body venturi for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 07/18/2002 | WO2002008602A3 Liquid pump and metering apparatus |
| 07/17/2002 | CN1359454A Orifice-built-in valve |
| 07/04/2002 | WO2002031311A3 Gas operated pump for use in a wellbore |
| 07/02/2002 | US6413053 Apparatus and method for moving fluid |
| 06/13/2002 | WO2002018781A3 Dual chamber liquid pump |
| 06/13/2002 | US20020070240 Liquid dispenser |
| 06/12/2002 | CN1086223C Liquid pressure supply device |
| 06/06/2002 | WO2000065237A9 Gas pressurized liquid pump with intermediate chamber |
| 05/23/2002 | WO2002040870A1 Waste liquid collection system |
| 05/09/2002 | US20020055026 Cogeneration system for a fuel cell |
| 05/09/2002 | US20020055025 Cogeneration system for a fuel cell |
| 05/09/2002 | US20020055024 Cogeneration system for a fuel cell |
| 05/09/2002 | US20020054818 Water supply system and pump apparatus therefor |
| 05/03/2002 | CA2325154A1 A water supply system and pump apparatus therefor |
| 05/02/2002 | WO2002035057A1 Gas displaced chamber lift system with closed loop/multi-stage vents |
| 04/23/2002 | CA2248910C Dispensing system and method for dispensing an aqueous solution |
| 04/18/2002 | WO2002031311A2 Gas operated pump for use in a wellbore |
| 04/17/2002 | CN1345401A Autoamtic pneumatic pump |
| 04/16/2002 | US6371145 System and method for compressing a fluid |
| 04/11/2002 | US20020041808 Pressure motive pump |
| 04/11/2002 | US20020040785 Gas operated pump for use in a wellbore |
| 04/09/2002 | US6368068 Multi-well computerized control of fluid pumping |
| 04/09/2002 | US6368067 Dual chamber liquid pump |
| 04/09/2002 | US6367662 Liquid dispenser |
| 04/02/2002 | US6365289 Cogeneration system for a fuel cell |
| 04/02/2002 | US6363718 Method for accumulating energy from natural power |
| 03/20/2002 | EP0937192A4 Groundwater recovery system |
| 03/13/2002 | EP1185796A2 Gas pressurized liquid pump with intermediate chamber |
| 03/12/2002 | US6354377 Gas displaced chamber lift system having gas lift assist |
| 03/07/2002 | WO2002018781A2 Dual chamber liquid pump |
| 03/06/2002 | CN2480602Y Pneumatic water pumping device for small head well |
| 02/27/2002 | EP1182355A1 Apparatus for deep ground drainage |
| 02/27/2002 | CN2479270Y Air lift pump |
| 02/14/2002 | WO2002012724A1 A system and method for compressing a fluid |