NR ELECTRIC CO., LTD

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 11109
 
  
 
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 795
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 671
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 391
 
  
 
F03D WIND MOTORS139
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H01C RESISTORS127
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9906177 Low-frequency band suppression enhanced anti-reversal power system stabilizerApr 13, 16Feb 27, 18[H02P, F03D, H02H]
9876393 Direct current (DC) voltage control method and apparatusSep 25, 14Jan 23, 18[H02J, H01H]
9876420 Sub-module distributed control method, device and systemOct 28, 15Jan 23, 18[H02M]
9768696 Direct current transmission inverter side frequency control methodJan 22, 15Sep 19, 17[H02M]
9640981 Frequency-conversion differential protection method for output transformer of static frequency converter systemJul 01, 13May 02, 17[H02H]
9634476 Apparatus for breaking line bidirectional current and control method thereofDec 27, 13Apr 25, 17[H01H, H02H]
9608511 Method for charging modular multilevel converterJan 17, 14Mar 28, 17[H02M]
9584007 Current source converter differential protection method and relay protection deviceApr 14, 14Feb 28, 17[H02M, H02H]
9362734 Apparatus for limiting current of line or breaking current, and control method thereofDec 27, 13Jun 07, 16[H01H, H02H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2017/0047,727 DIRECT-CURRENT POWER TRANSMISSION PROTECTION DEVICE, CONVERTER AND PROTECTION METHODAbandonedMay 04, 14Feb 16, 17[H02M, H02H, H05K]
2016/0126,827 SUB-MODULE, PROTECTION UNIT, CONVERTER, AND CONTROL METHOD THEREOFAbandonedMay 05, 14May 05, 16[H02M]

Top Inventors for This Owner

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