Assignee
GRUNDFOS AS
DK·59 granted patents·1,544 citations·filing 1975–2011
Top patents by PatentIndex Score
59 records- 0199USD372719SWater pumpGRUNDFOS AS·Filed 1994·Granted Aug 13, 1996·122 cites·1 claims
- 0296US6548976B2Method for the commutation of a polyphase permanent magnet motorGRUNDFOS AS·Filed 2001·Granted Apr 15, 2003·87 cites·17 claims
- 0394US6326752B1Method for the commutation of a polyphase permanent magnet motorGRUNDFOS AS·Filed 1999·Granted Dec 4, 2001·94 cites·4 claims
- 0492US6208112B1Method for controlling a voltage/frequency converter controlled single-phase or polyphase electric motorGRUNDFOS AS·Filed 1999·Granted Mar 27, 2001·103 cites·16 claims
- 0592US5598080AStarting device for a single-phase induction motorGRUNDFOS AS·Filed 1993·Granted Jan 28, 1997·111 cites·4 claims
- 0691US6373728B1Frequency converter with an intermediate buck-boost converter for controlling an electric motorGRUNDFOS AS·Filed 2000·Granted Apr 16, 2002·90 cites·6 claims
- 0789US8353676B2Method for determining faults during the operation of a pump unitGRUNDFOS AS·Filed 2011·Granted Jan 15, 2013·8 cites·15 claims
- 0889US7195462B2Method for controlling several pumpsGRUNDFOS AS·Filed 2003·Granted Mar 27, 2007·63 cites·27 claims
- 0989US6981399B1Method for detecting a differential pressureGRUNDFOS AS·Filed 2003·Granted Jan 3, 2006·62 cites·19 claims
- 1089US5714816AElectric motorGRUNDFOS AS·Filed 1996·Granted Feb 3, 1998·100 cites·9 claims
- 1187US5332369APump unit with cooling jacket for electric motorGRUNDFOS AS·Filed 1992·Granted Jul 26, 1994·59 cites·10 claims
- 1282US4475873AWet-motor pumpGRUNDFOS AS·Filed 1982·Granted Oct 9, 1984·41 cites·1 claims
- 1380US7823456B2Pressure sensorGRUNDFOS AS·Filed 2009·Granted Nov 2, 2010·11 cites·16 claims
- 1477US4465437APump comprising a canned motorGRUNDFOS AS·Filed 1982·Granted Aug 14, 1984·35 cites·4 claims
- 1576US4518318APumping setsGRUNDFOS AS·Filed 1983·Granted May 21, 1985·32 cites·3 claims
- 1672US7010984B2Differential pressure sensorGRUNDFOS AS·Filed 2004·Granted Mar 14, 2006·16 cites·13 claims
- 1772US6085596APressure sensor having an insulating layer and fluid tight amorphous metal layerGRUNDFOS AS·Filed 1997·Granted Jul 11, 2000·45 cites·14 claims
- 1872US4447189ACentrifugal pump for moving gaseous liquidsGRUNDFOS AS·Filed 1982·Granted May 8, 1984·28 cites·4 claims
- 1971US6030709AElectronic componentGRUNDFOS AS·Filed 1997·Granted Feb 29, 2000·44 cites·15 claims
- 2071USD357687SPump housingGRUNDFOS AS·Filed 1993·Granted Apr 25, 1995·14 cites·1 claims
- 2170US4035701AMethod of stepwise speed control and three-phase squirrel-cage motorGRUNDFOS AS·Filed 1975·Granted Jul 12, 1977·20 cites·1 claims
- 2269US7509866B2Pressure sensorGRUNDFOS AS·Filed 2005·Granted Mar 31, 2009·7 cites·14 claims
- 2366US7713771B2Pressure sensorGRUNDFOS AS·Filed 2006·Granted May 11, 2010·5 cites·51 claims
- 2465USD364172SPumpGRUNDFOS AS·Filed 1994·Granted Nov 14, 1995·11 cites·1 claims
- 2564US4484862ASubmersible pumpsGRUNDFOS AS·Filed 1982·Granted Nov 27, 1984·20 cites·1 claims
- 2662US7166974B2Method for controlling the firing angle of an electric motorGRUNDFOS AS·Filed 2005·Granted Jan 23, 2007·5 cites·4 claims
- 2762US4436486ACirculating pump unitGRUNDFOS AS·Filed 1981·Granted Mar 13, 1984·16 cites·3 claims
- 2861US6273684B1Centrifugal pump unitGRUNDFOS AS·Filed 2000·Granted Aug 14, 2001·15 cites·10 claims
- 2961US4427421ADevice for separating gas out of liquidsGRUNDFOS AS·Filed 1981·Granted Jan 24, 1984·20 cites·19 claims
- 3058US7118347B2Method for activating an electric motor and a metering pump by supplying predetermined pulse intervals to supply predetermined fluid quantitiesGRUNDFOS AS·Filed 2001·Granted Oct 10, 2006·9 cites·2 claims
- 3156US6322332B1Device for the external cooling of the electric drive motor of a centrifugal pump unitGRUNDFOS AS·Filed 1999·Granted Nov 27, 2001·20 cites·9 claims
- 3256US6022196ASubmersible motor unitGRUNDFOS AS·Filed 1998·Granted Feb 8, 2000·23 cites·12 claims
- 3355US6140725AWet-running submersible motor for driving a centrifugal pumpGRUNDFOS AS·Filed 1998·Granted Oct 31, 2000·25 cites·7 claims
- 3455US4507583APiezo-electric level detectorGRUNDFOS AS·Filed 1984·Granted Mar 26, 1985·16 cites·14 claims
- 3554US6746206B2Centrifugal pumpGRUNDFOS AS·Filed 2002·Granted Jun 8, 2004·10 cites·5 claims
- 3653US4549849APumping assembliesGRUNDFOS AS·Filed 1983·Granted Oct 29, 1985·14 cites·6 claims
- 3752US5975842ASensor arrangementGRUNDFOS AS·Filed 1998·Granted Nov 2, 1999·19 cites·15 claims
- 3852US4358299AGas separator for liquid-conducting systemsGRUNDFOS AS·Filed 1981·Granted Nov 9, 1982·12 cites·12 claims
- 3949US7043395B2Method for detecting the magnetic flux the rotor position and/or the rotational speedGRUNDFOS AS·Filed 2003·Granted May 9, 2006·8 cites·20 claims
- 4049US6729622B2Ready-to-mount axial face sealGRUNDFOS AS·Filed 2002·Granted May 4, 2004·5 cites·24 claims
- 4148US4042847ALiquid-filled submersible electromotorGRUNDFOS AS·Filed 1975·Granted Aug 16, 1977·17 cites·4 claims
- 4246US4516915APumping plantGRUNDFOS AS·Filed 1983·Granted May 14, 1985·18 cites·1 claims
- 4344US7264450B2Pump unit and method for operating a pump unitGRUNDFOS AS·Filed 2000·Granted Sep 4, 2007·2 cites·15 claims
- 4444US6948914B2Metering pump with an electric motorGRUNDFOS AS·Filed 2001·Granted Sep 27, 2005·3 cites·13 claims
- 4543US7578397B2Device for the treatment of fluidsGRUNDFOS AS·Filed 2005·Granted Aug 25, 2009·0 cites·35 claims
- 4642US7105085B2Device for biological fluid treatmentGRUNDFOS AS·Filed 2002·Granted Sep 12, 2006·1 cites·18 claims
- 4742US5807073AInline centrifugal pumpGRUNDFOS AS·Filed 1997·Granted Sep 15, 1998·10 cites·7 claims
- 4841US7143650B2Pressure sensorGRUNDFOS AS·Filed 2003·Granted Dec 5, 2006·2 cites·23 claims
- 4941US7013738B2Flow sensorGRUNDFOS AS·Filed 2003·Granted Mar 21, 2006·2 cites·21 claims
- 5038US7859211B2Method for controlling the firing angle of an electric motorGRUNDFOS AS·Filed 2007·Granted Dec 28, 2010·0 cites·18 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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