Assignee
GRUNDFOS INT
DK·21 granted patents·775 citations·filing 1987–1992
Top patents by PatentIndex Score
21 records- 0194US5158436APump with speed controller responsive to temperatureGRUNDFOS INT·Filed 1991·Granted Oct 27, 1992·160 cites·9 claims
- 0292US4963778AFrequency converter for controlling a motorGRUNDFOS INT·Filed 1990·Granted Oct 16, 1990·191 cites·2 claims
- 0392US4834624APump assembly for delivering liquids and gasesGRUNDFOS INT·Filed 1987·Granted May 30, 1989·140 cites·7 claims
- 0473US4908757AStatic frequency converter, especially a frequency converter controlling and/or adjusting the performance data of an electromotorGRUNDFOS INT·Filed 1989·Granted Mar 13, 1990·33 cites·3 claims
- 0570US4930996AImmersion pump assemblyGRUNDFOS INT·Filed 1989·Granted Jun 5, 1990·26 cites·5 claims
- 0663US4842725AAssembly for making up untreated water according to the principle of reverse osmosisGRUNDFOS INT·Filed 1988·Granted Jun 27, 1989·20 cites·11 claims
- 0762US5028218AImmersion pump assemblyGRUNDFOS INT·Filed 1989·Granted Jul 2, 1991·24 cites·10 claims
- 0862US4981420AImmersion pumpGRUNDFOS INT·Filed 1989·Granted Jan 1, 1991·23 cites·7 claims
- 0955US4842480AMulti-stage inline rotary pumpGRUNDFOS INT·Filed 1987·Granted Jun 27, 1989·19 cites·6 claims
- 1054US4877372AMulti-stage rotary pumpGRUNDFOS INT·Filed 1988·Granted Oct 31, 1989·17 cites·2 claims
- 1152US5591310ADistillationGRUNDFOS INT·Filed 1992·Granted Jan 7, 1997·16 cites·12 claims
- 1247US5224389AMethod and apparatus for taking samples from a groundwater monitoring siteGRUNDFOS INT·Filed 1990·Granted Jul 6, 1993·25 cites·8 claims
- 1347US5202596AElectric motorGRUNDFOS INT·Filed 1991·Granted Apr 13, 1993·16 cites·7 claims
- 1443US5176021AMethod and apparatus for making shaped metal parts by forming sheet metalGRUNDFOS INT·Filed 1992·Granted Jan 5, 1993·11 cites·9 claims
- 1541US5022139AMethod of inserting a stator winding into a statorGRUNDFOS INT·Filed 1990·Granted Jun 11, 1991·10 cites·1 claims
- 1641US4773822APump comprising a canned motorGRUNDFOS INT·Filed 1987·Granted Sep 27, 1988·12 cites·9 claims
- 1735US4761592AElectric motor with overload protection circuitGRUNDFOS INT·Filed 1987·Granted Aug 2, 1988·7 cites·12 claims
- 1833US4827777AOscillating jet meterGRUNDFOS INT·Filed 1988·Granted May 9, 1989·4 cites·4 claims
- 1932US4775292APump comprising a gas separatorGRUNDFOS INT·Filed 1987·Granted Oct 4, 1988·7 cites·7 claims
- 2030US4729491AVent plugGRUNDFOS INT·Filed 1987·Granted Mar 8, 1988·7 cites·9 claims
- 2128US4787816ARotary pumpGRUNDFOS INT·Filed 1987·Granted Nov 29, 1988·7 cites·5 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →