NIDEC SR DRIVES LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 6931
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 4167
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 4155
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 3102
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 398
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 399
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 3108
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 298
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 282
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 275

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0276,888 WINDINGS FOR ELECTRICAL MACHINESMar 02, 16Sep 22, 16[H02K]
2016/0226,319 Stator for an Electrical MachineJan 22, 16Aug 04, 16[H02K]
2015/0035,390 ROTOR FOR AN ELECTRICAL MACHINEAug 04, 14Feb 05, 15[H02K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9887657 Method of operating a switched reluctance machineOct 12, 16Feb 06, 18[H02P]
9575104 Estimation of resistance in electrical machinesDec 03, 13Feb 21, 17[G01K, G01R]
9312801 Control of a brushless electrical machineFeb 25, 14Apr 12, 16[H02P]
9246363 Reducing stress in electric-machine rotors by optimizing holesMay 11, 11Jan 26, 16[H02K]
9024556 Control of electrical machinesJun 27, 12May 05, 15[H02P]
8169109 Electrical machine with dual radial airgapsMar 11, 10May 01, 12[H02K]
8125113 Slot wedges for electrical machinesSep 30, 09Feb 28, 12[H02K]
8121819 Deriving values of parameters in electrical machinesNov 13, 08Feb 21, 12[H02P]
8049528 Operation of an electrical drive systemDec 21, 07Nov 01, 11[G01R]
7906931 Control of a switched reluctance machineNov 28, 07Mar 15, 11[H02P]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0207,441 CONTROL OF ELECTRICAL MACHINESAbandonedJan 20, 15Jul 23, 15[H02P]
2002/0185,990 Excitation of switched reluctance motorsAbandonedMay 22, 02Dec 12, 02[H02P]

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