Woodward Kempen GmbH

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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 582
 
  
 
F03D WIND MOTORS436
 
  
 
H02B BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER 233
 
  
 
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 2100
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 1119
 
  
 
H03K PULSE TECHNIQUE 1130
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9673804 Circuit arrangement of electronic circuit breakers of a power generation deviceJul 13, 12Jun 06, 17[H03K, H02M]
8837116 Power switchgear cabinet of a device for producing electric energyOct 03, 13Sep 16, 14[H02B, H05K]
8830658 Switchgear cabinet arrangement of a device for producing electric energyOct 03, 13Sep 09, 14[H02M, H02P, H02B, F03D, H05K]
8698461 Direct power control with component separationSep 11, 08Apr 15, 14[H02P]
8653683 Device for controlling a double-fed asynchronous machineMay 19, 11Feb 18, 14[H02P]
8487461 Method for operating a wind energy installationJan 06, 09Jul 16, 13[F03D]
8415818 Method of and apparatus for compensation of oscillation effects in the event of mains asymmetry in a double-fed asynchronous machineAug 09, 08Apr 09, 13[H02P]
8400004 Method for operating a wind turbineJan 28, 09Mar 19, 13[H02P, F03D]
8373293 Protection system of a doubly-fed induction machineApr 20, 11Feb 12, 13[H02P, F03D]
8264209 Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changesMar 17, 08Sep 11, 12[H02P, H02H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8242753 Current limitation for a double-fed asynchronous machineExpiredMay 30, 07Aug 14, 12[H02P]

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