RICHPOWER MICROELECTRONICS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 597
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 496
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 473
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 4107
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 2118
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 162
 
  
 
H03K PULSE TECHNIQUE 1130

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9178414 Jittering frequency control circuit and method for a switching mode power supplyJan 30, 12Nov 03, 15[H02M]
9060402 State cycling apparatus and method, and control circuit for a lampSep 11, 12Jun 16, 15[H05B]
9006991 State cycling apparatus and method, and control circuit for a lampSep 11, 12Apr 14, 15[H05B]
9000682 Dimming circuit and method for LEDsMar 14, 13Apr 07, 15[H05B, G05F]
8824172 Apparatus and method for standby power reduction of a flyback power converterAug 09, 10Sep 02, 14[H02M]
8710870 Power supply input voltage detection circuitNov 09, 11Apr 29, 14[H03K]
8665010 Circuit and method for sub-harmonic elimination of a power converterOct 07, 11Mar 04, 14[H03B]
8582324 Pulse width modulation controller and method for output ripple reduction of a jittering frequency switching power supplyJan 30, 12Nov 12, 13[H02M]
8576529 Power stage control circuitMar 01, 11Nov 05, 13[H02H]
8508960 Voltage detector and protection apparatus using the sameApr 01, 11Aug 13, 13[H02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8581514 Dimming circuit and method for LEDsExpiredApr 06, 11Nov 12, 13[G05F]
8564251 Switch embedded integrated circuit and method for battery protectionExpiredMar 22, 10Oct 22, 13[H02J]
8533508 Apparatus and method for reducing the standby power consumption of a display, and display with low standby power consumptionExpiredJul 19, 10Sep 10, 13[H02M, G09G, G06F, G05F, H01F]
8415927 Switch embedded integrated circuit and method for battery protectionExpiredDec 27, 10Apr 09, 13[H02J]
2013/0026,943 STATE CYCLING APPARATUS AND METHOD, AND CONTROL CIRCUIT FOR A LAMPAbandonedSep 11, 12Jan 31, 13[H05B]
8351223 Temperature compensation in output feedback of a flyback power converterExpiredJul 19, 10Jan 08, 13[H02M]
2012/0313,616 AC DISCHARGE CIRCUIT FOR AN AC-TO-DC SWITCHING POWER CONVERTERAbandonedJun 01, 12Dec 13, 12[G05F]
2012/0106,209 METHOD FOR GENERATING A CURRENT LIMIT SIGNAL FOR A POWER CONVERTER WITHOUT SENSING AN INPUT VOLTAGE OF THE POWER CONVERTERAbandonedOct 28, 11May 03, 12[H02M]
2012/0064,378 SMART PROTECTION FOR A BATTERY PACKAbandonedSep 09, 11Mar 15, 12[H01M]
2011/0069,420 PROTECTION TO A POWER CONVERTER BY USING A HIGH-VOLTAGE START-UP DEVICE IN A CONTROLLER CHIP OF THE POWER CONVERTERAbandonedSep 17, 10Mar 24, 11[H02H]
2011/0012,554 APPARATUS AND METHOD FOR IMPROVING THE STANDBY EFFICIENCY OF A CHARGER, AND ULTRA LOW STANDBY POWER CHARGERAbandonedJul 08, 10Jan 20, 11[H02J]
2010/0253,242 STATE CYCLING APPARATUS AND METHOD, AND CONTROL CIRCUIT FOR A LAMPAbandonedMar 31, 10Oct 07, 10[H05B, G05F]

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