O2MICRO INTERNATIONAL LIMITED

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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 7448
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 3368
 
  
 
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 2577
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 2487
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 20134
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 11436
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 7152
 
  
 
H03K PULSE TECHNIQUE 7124
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 688
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 671

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2003/0140,182 PCI-PCMCIA smart card readerJan 22, 02Jul 24, 03[G06F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9253843 Driving circuit with dimming controller for driving light sourcesOct 08, 14Feb 02, 16[H05B]
9232591 Circuits and methods for driving light sourcesJul 26, 12Jan 05, 16[H05B, G05F]
9209702 Flyback converter and method for controlling a flyback converterOct 24, 12Dec 08, 15[H02M]
8981657 Circuits and methods for driving light sourcesMar 27, 13Mar 17, 15[H05B]
8952660 Systems and methods for balancing battery cellsAug 29, 11Feb 10, 15[H02J, H01M]
8907625 Battery management systems with vertical bus circuitsJul 15, 11Dec 09, 14[H02J, H01M]
8890440 Circuits and methods for driving light sourcesAug 19, 13Nov 18, 14[H05B, G05F]
8880916 Circuits and methods for controlling battery management systemsJul 26, 12Nov 04, 14[H02J, G06F]
8866398 Circuits and methods for driving light sourcesSep 10, 12Oct 21, 14[H05B]
8841888 Individual cell voltage detection circuit for charge and discharge control in a battery packJun 16, 11Sep 23, 14[H02J, H01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8664895 Circuits and methods for driving light sourcesExpiredJul 24, 12Mar 04, 14[H05B, G05F]
8350532 Power management systemsExpiredMar 07, 11Jan 08, 13[H02J]
8350534 Method and electronic circuit for efficient battery wake up chargingExpiredJul 19, 09Jan 08, 13[H02J]
8330388 Circuits and methods for driving light sourcesExpiredMay 19, 10Dec 11, 12[H05B]
8324832 Circuits and methods for controlling power of light sourcesExpiredJun 25, 10Dec 04, 12[H05B]
8289731 Converter controllerExpiredJun 05, 07Oct 16, 12[H02M, G05F]
8278876 Battery pack current monitoringExpiredSep 26, 05Oct 02, 12[H02J]
8248439 Backlight controller for driving light sourcesExpiredApr 26, 11Aug 21, 12[G09G]
8237371 Differential driving circuit for powering a light sourceExpiredOct 29, 10Aug 07, 12[H05B]
8233292 Controllers, systems and methods for controlling power of light sourcesExpiredApr 19, 11Jul 31, 12[H02M]
8227998 Controller for controlling dimming of a light sourceExpiredSep 28, 10Jul 24, 12[H05B]
8217530 System for managing power based on current monitoringExpiredJun 30, 09Jul 10, 12[H02J]
8217634 Current control systems with current feedbacksExpiredJun 18, 09Jul 10, 12[G05F]
8213193 Flyback DC-DC converter with feedback controlExpiredNov 28, 07Jul 03, 12[H02M]
8183787 Power supply systems with controllable powerExpiredMar 05, 10May 22, 12[H05B]
8179053 Power supply for an LCD displayExpiredSep 12, 08May 15, 12[H05B]
8169147 Circuit for vehicle lightingExpiredSep 17, 09May 01, 12[B60Q, G01R]
8143800 Circuits and methods for driving a load with power factor correction functionExpiredJun 17, 10Mar 27, 12[H05B]
8143862 Circuits and methods for battery chargingExpiredMar 12, 09Mar 27, 12[H02J]
8129982 Voltage sensing circuits and methods for invertersExpiredJun 22, 09Mar 06, 12[G01R]

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