TREA

Kiyotaka Umemoto

Follow

Person

  • Kyoto, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Semiconductor device
    • Patent number 11,011,612
    • Issue date May 18, 2021
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Semiconductor device
    • Patent number 10,833,037
    • Issue date Nov 10, 2020
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Semiconductor device
    • Patent number 10,483,227
    • Issue date Nov 19, 2019
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Constant voltage generating circuit
    • Patent number 10,379,564
    • Issue date Aug 13, 2019
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Switching regulator
    • Patent number 10,355,589
    • Issue date Jul 16, 2019
    • Rohm Co., Ltd.
    • Tetsuo Tateishi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Semiconductor package
    • Patent number 10,281,969
    • Issue date May 7, 2019
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Semiconductor device
    • Patent number 10,276,533
    • Issue date Apr 30, 2019
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Synchronous rectification DC/DC converter
    • Patent number 10,008,932
    • Issue date Jun 26, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Constant voltage generating circuit
    • Patent number 9,996,097
    • Issue date Jun 12, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Semiconductor device
    • Patent number 9,984,990
    • Issue date May 29, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor device
    • Patent number 9,607,927
    • Issue date Mar 28, 2017
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Control circuit for synchronous rectification type step-down switch...
    • Patent number 8,558,529
    • Issue date Oct 15, 2013
    • Rohm Co., Ltd.
    • Masaru Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Step-down switching regulator
    • Patent number 8,111,051
    • Issue date Feb 7, 2012
    • Rohm Co., Ltd.
    • Masaru Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus
    • Patent number 8,072,201
    • Issue date Dec 6, 2011
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus
    • Patent number 7,663,355
    • Issue date Feb 16, 2010
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC/DC converter
    • Patent number 7,612,545
    • Issue date Nov 3, 2009
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching regulator
    • Patent number 7,595,620
    • Issue date Sep 29, 2009
    • Rohm Co., Ltd.
    • Masaru Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus
    • Patent number 7,486,061
    • Issue date Feb 3, 2009
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor driving apparatus incorporating switch device driving apparatus
    • Patent number 7,202,652
    • Issue date Apr 10, 2007
    • ROHM Co, Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus
    • Patent number 7,148,667
    • Issue date Dec 12, 2006
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power supply unit having improved output voltage response
    • Patent number 7,095,219
    • Issue date Aug 22, 2006
    • Rohm Co., Ltd.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Semiconductor device
    • Patent number 7,061,735
    • Issue date Jun 13, 2006
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Power supply unit having multiple power supply outputs
    • Patent number 7,045,915
    • Issue date May 16, 2006
    • Rohm Co., Ltd.
    • Kenji Otani
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC/DC converter
    • Patent number 7,046,533
    • Issue date May 16, 2006
    • Rohm Co., Ltd.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching device driving apparatus and DC/DC converter incorporatin...
    • Patent number 6,954,055
    • Issue date Oct 11, 2005
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching power supply unit
    • Patent number 6,949,917
    • Issue date Sep 27, 2005
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC/DC converter
    • Patent number 6,922,042
    • Issue date Jul 26, 2005
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power supply unit having improved output voltage response
    • Patent number 6,917,189
    • Issue date Jul 12, 2005
    • Rohm Co., Ltd.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply device and electric appliance employing the same
    • Patent number 6,894,470
    • Issue date May 17, 2005
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Multiphase DC/DC converter
    • Patent number 6,891,736
    • Issue date May 10, 2005
    • Rohm Co., Ltd.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    Semiconductor Device
    • Publication number 20200066668
    • Publication date Feb 27, 2020
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G01 - MEASURING TESTING
  • Information Patent Application

    SEMICONDUCTOR DEVICE
    • Publication number 20200027957
    • Publication date Jan 23, 2020
    • Rohm Co., Ltd.
    • Kiyotaka UMEMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Device
    • Publication number 20190221536
    • Publication date Jul 18, 2019
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G01 - MEASURING TESTING
  • Information Patent Application

    CONSTANT VOLTAGE GENERATING CIRCUIT
    • Publication number 20180259991
    • Publication date Sep 13, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    Semiconductor Device
    • Publication number 20180247911
    • Publication date Aug 30, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SEMICONDUCTOR PACKAGE
    • Publication number 20180059759
    • Publication date Mar 1, 2018
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Semiconductor Device
    • Publication number 20170162528
    • Publication date Jun 8, 2017
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SYNCHRONOUS RECTIFICATION DC/DC CONVERTER
    • Publication number 20170155323
    • Publication date Jun 1, 2017
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    SWITCHING REGULATOR
    • Publication number 20160373009
    • Publication date Dec 22, 2016
    • Rohm Co., Ltd.
    • Tetsuo TATEISHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SEMICONDUCTOR DEVICE
    • Publication number 20160226487
    • Publication date Aug 4, 2016
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    CONSTANT VOLTAGE GENERATING CIRCUIT
    • Publication number 20160224049
    • Publication date Aug 4, 2016
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    Semiconductor Device
    • Publication number 20150243585
    • Publication date Aug 27, 2015
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SEMICONDUCTOR DEVICE
    • Publication number 20140291679
    • Publication date Oct 2, 2014
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • G01 - MEASURING TESTING
  • Information Patent Application

    STEP-DOWN SWITCHING REGULATOR
    • Publication number 20120091983
    • Publication date Apr 19, 2012
    • Rohm Co., Ltd.
    • Masaru SAKAI
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    SWITCHING REGULATOR CONTROL CIRCUIT, SWITCHING REGULATOR, AND ELECT...
    • Publication number 20120049821
    • Publication date Mar 1, 2012
    • Rohm Co., Ltd.
    • Shingo Hashiguchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    STEP-DOWN SWITCHING REGULATOR, CONTROL CIRCUIT THEREOF, AND ELECTRO...
    • Publication number 20100156366
    • Publication date Jun 24, 2010
    • Rohm Co., Ltd.
    • Masaru Sakai
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER SUPPLY APPARATUS
    • Publication number 20100109629
    • Publication date May 6, 2010
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    POWER SUPPLY APPARATUS
    • Publication number 20090134860
    • Publication date May 28, 2009
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    SEMICONDUCTOR DEVICE, POWER SUPPLY DEVICE, AND INFORMATION PROCESSI...
    • Publication number 20090128219
    • Publication date May 21, 2009
    • Rohm Co., Ltd.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Dc/Dc Converter
    • Publication number 20080019160
    • Publication date Jan 24, 2008
    • ROHM CO, LTD
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Switching regulator
    • Publication number 20070182395
    • Publication date Aug 9, 2007
    • Masaru Sakai
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Power supply apparatus
    • Publication number 20070057650
    • Publication date Mar 15, 2007
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Motor driving apparatus incorporating switch device driving apparatus
    • Publication number 20050179425
    • Publication date Aug 18, 2005
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    DC/DC converter
    • Publication number 20050146905
    • Publication date Jul 7, 2005
    • ROHM CO., LTD.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Electric power supply unit having improved output voltage response
    • Publication number 20050099168
    • Publication date May 12, 2005
    • ROHM CO., LTD.
    • Ko Takemura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Switching power supply unit
    • Publication number 20050040801
    • Publication date Feb 24, 2005
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Semiconductor device
    • Publication number 20040218323
    • Publication date Nov 4, 2004
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Power supply apparatus
    • Publication number 20040207375
    • Publication date Oct 21, 2004
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    DC/DC converter
    • Publication number 20040008528
    • Publication date Jan 15, 2004
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Switching device driving apparatus and DC/DC converter incorporatin...
    • Publication number 20030231011
    • Publication date Dec 18, 2003
    • ROHM CO., LTD.
    • Kiyotaka Umemoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...