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.
Join the waitlist — get patent alerts
Get an alert when GRUNDFOS AS files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →