TREA

Hiroshi Usui

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Patents Grantslast 30 patents

  • Information Patent Grant

    PFC AC/DC converter reducing harmonics, switching loss, and switchi...
    • Patent number 8,817,494
    • Issue date Aug 26, 2014
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter
    • Patent number 8,648,577
    • Issue date Feb 11, 2014
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter
    • Patent number 8,416,582
    • Issue date Apr 9, 2013
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Output controlled DC-to-DC converter
    • Patent number 8,411,466
    • Issue date Apr 2, 2013
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Resonant switching power supply device which suppresses a switching...
    • Patent number 8,395,912
    • Issue date Mar 12, 2013
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power source apparatus
    • Patent number 8,248,830
    • Issue date Aug 21, 2012
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Cold cathode fluorescent lamp inverter apparatus
    • Patent number 7,994,736
    • Issue date Aug 9, 2011
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    DC-DC converter
    • Patent number 7,952,334
    • Issue date May 31, 2011
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC-DC converter
    • Patent number 7,928,701
    • Issue date Apr 19, 2011
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Current resonant DC-DC converter of multi-output type
    • Patent number 7,768,801
    • Issue date Aug 3, 2010
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Method of manufacturing an ultrasonic probe
    • Patent number 7,757,389
    • Issue date Jul 20, 2010
    • GE Medical Systems Global Technology Company, LLC
    • Mitsuhiro Nozaki
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply and its controlling method
    • Patent number 7,719,860
    • Issue date May 18, 2010
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC-DC converter
    • Patent number 7,719,240
    • Issue date May 18, 2010
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Discharge-lamp lighting apparatus
    • Patent number 7,710,043
    • Issue date May 4, 2010
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Switching power source device
    • Patent number 7,639,516
    • Issue date Dec 29, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter for overvoltage protection
    • Patent number 7,633,776
    • Issue date Dec 15, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Dropper type regulator
    • Patent number 7,612,550
    • Issue date Nov 3, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Overheat protection circuit for power supply devices and direct-cur...
    • Patent number 7,566,845
    • Issue date Jul 28, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter
    • Patent number 7,522,429
    • Issue date Apr 21, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Discharge-lamp lighting apparatus
    • Patent number 7,439,686
    • Issue date Oct 21, 2008
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Synchronous commutation DC-DC converter
    • Patent number 7,330,365
    • Issue date Feb 12, 2008
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter of multi-output type
    • Patent number 7,304,867
    • Issue date Dec 4, 2007
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Converter with start-up circuit
    • Patent number 7,221,128
    • Issue date May 22, 2007
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Overheat protector for a dc-to-dc converter or the like
    • Patent number 7,215,525
    • Issue date May 8, 2007
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching power source apparatus and power factor corrector
    • Patent number 7,176,660
    • Issue date Feb 13, 2007
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power factor improving converter and control method thereof
    • Patent number 6,980,445
    • Issue date Dec 27, 2005
    • Sanken Electric Co., Ltd.
    • Yukinari Fukumoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching power supply with overcurrent protection
    • Patent number 6,760,203
    • Issue date Jul 6, 2004
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Transformer
    • Patent number 6,741,155
    • Issue date May 25, 2004
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    AC-DC converter with reduced energy loss through a switching element
    • Patent number 6,373,735
    • Issue date Apr 16, 2002
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter with reduced energy loss under lowered load impedance
    • Patent number 6,366,479
    • Issue date Apr 2, 2002
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    DC-DC CONVERTER
    • Publication number 20120139512
    • Publication date Jun 7, 2012
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    CONVERTER
    • Publication number 20120033451
    • Publication date Feb 9, 2012
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    RESONANT SWITCHING POWER SUPPLY DEVICE
    • Publication number 20110051465
    • Publication date Mar 3, 2011
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    DC-TO-DC CONVERTER
    • Publication number 20110007529
    • Publication date Jan 13, 2011
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC-DC CONVERTER
    • Publication number 20100302817
    • Publication date Dec 2, 2010
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER FACTOR CORRECTING CONVERTER
    • Publication number 20100265741
    • Publication date Oct 21, 2010
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER SOURCE APPARATUS
    • Publication number 20100127685
    • Publication date May 27, 2010
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    POWER SOURCE APPARATUS AND CONTROL METHOD THEREOF
    • Publication number 20090303751
    • Publication date Dec 10, 2009
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    CURRENT RESONANT DC-DC CONVERTER OF MULTI-OUTPUT TYPE
    • Publication number 20090251925
    • Publication date Oct 8, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER FACTOR CORRECTING CONVERTER
    • Publication number 20090190382
    • Publication date Jul 30, 2009
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    AC-DC CONVERTER
    • Publication number 20090027930
    • Publication date Jan 29, 2009
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    AC-DC CONVERTER
    • Publication number 20090027931
    • Publication date Jan 29, 2009
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER SOURCE APPARATUS
    • Publication number 20080316785
    • Publication date Dec 25, 2008
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC-DC CONVERTER
    • Publication number 20080284390
    • Publication date Nov 20, 2008
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    COLD CATHODE FLUORESCENT LAMP INVERTER APPARATUS
    • Publication number 20080150444
    • Publication date Jun 26, 2008
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    DROPPER TYPE REGULATOR
    • Publication number 20080116859
    • Publication date May 22, 2008
    • SANKEN ELECTRIC CO., LTD.
    • Hiroshi Usui
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    FLEXIBLE PRINTED CIRCUIT BOARD, ULTRASONIC PROBE, AND METHOD OF MAN...
    • Publication number 20080002375
    • Publication date Jan 3, 2008
    • Mitsuhiro Nozaki
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    DISCHARGE-LAMP LIGHTING APPARATUS
    • Publication number 20070273300
    • Publication date Nov 29, 2007
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    DISCHARGE-LAMP LIGHTING APPARATUS
    • Publication number 20070273301
    • Publication date Nov 29, 2007
    • Sanken Electric Co., Ltd
    • Hiroshi Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    OVERHEAT PROTECTION CIRCUIT FOR POWER SUPPLY DEVICES AND DIRECT-CUR...
    • Publication number 20070139837
    • Publication date Jun 21, 2007
    • SANKEN ELECTRIC CO., LTD.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC-DC Converter for overvoltage protection
    • Publication number 20070133236
    • Publication date Jun 14, 2007
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC-DC Converter
    • Publication number 20070076448
    • Publication date Apr 5, 2007
    • SANKEN ELECTRIC CO., LTD.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Synchronous commutation dc-dc converter
    • Publication number 20070008757
    • Publication date Jan 11, 2007
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Resonant DC-DC converter of multi-output type
    • Publication number 20060170288
    • Publication date Aug 3, 2006
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    DC-DC converter of multi-output type
    • Publication number 20060158908
    • Publication date Jul 20, 2006
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Switching power source device
    • Publication number 20060109692
    • Publication date May 25, 2006
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power supply and its controlling method
    • Publication number 20060098462
    • Publication date May 11, 2006
    • Sanken Electric Co., Ltd.
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Switching power source apparatus and power factor corrector
    • Publication number 20050269997
    • Publication date Dec 8, 2005
    • Hiroshi Usui
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Converter
    • Publication number 20050201123
    • Publication date Sep 15, 2005
    • Hiroshi Usui
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power factor improving converter and control method thereof
    • Publication number 20050162143
    • Publication date Jul 28, 2005
    • Yukinari Fukumoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...