TREA

Hiroyuki Koyama

Follow

Person

  • Narita, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    PTC device
    • Patent number 9,697,933
    • Issue date Jul 4, 2017
    • Littelfuse Japan G.K.
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    PTC device
    • Patent number 9,413,158
    • Issue date Aug 9, 2016
    • LITTELFUSE JAPAN G.K.
    • Hiroyuki Koyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    PTC device
    • Patent number 9,287,696
    • Issue date Mar 15, 2016
    • Tyco Electronics Corporation
    • Hiroyuki Koyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    PTC device
    • Patent number 8,421,583
    • Issue date Apr 16, 2013
    • Tyco Electronics Japan G.K.
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    PTC device and process for manufacturing the same
    • Patent number 8,299,888
    • Issue date Oct 30, 2012
    • Tyco Electronics Japan G.K.
    • Hiroyuki Koyama
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    PTC device
    • Patent number 8,164,415
    • Issue date Apr 24, 2012
    • Tyco Electronics Japan G.K.
    • Arata Tanaka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    PTC thermistor and method for protecting circuit
    • Patent number 8,058,966
    • Issue date Nov 15, 2011
    • Hiroyuki Koyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Thermistor
    • Patent number 7,609,142
    • Issue date Oct 27, 2009
    • Tyco Electronics Raychem K.K.
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Combined PTC device
    • Patent number 7,515,032
    • Issue date Apr 7, 2009
    • Tyco Electronics Raychem K.K.
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    PTC DEVICE
    • Publication number 20160329136
    • Publication date Nov 10, 2016
    • LITTELFUSE JAPAN G.K.
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PTC Device
    • Publication number 20140327994
    • Publication date Nov 6, 2014
    • Tyco Electronics Japan G.K.
    • Hiroyuki Koyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    PTC Device
    • Publication number 20140293495
    • Publication date Oct 2, 2014
    • Tyco Electronics Japan G.K.
    • Hiroyuki Koyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    PTC DEVICE, PTC DEVICE MANUFACTURING METHOD, AND ELECTRIC DEVICE PR...
    • Publication number 20120026635
    • Publication date Feb 2, 2012
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PTC Device and Electrical Apparatus Containing the Same
    • Publication number 20110188166
    • Publication date Aug 4, 2011
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PTC Device
    • Publication number 20110170221
    • Publication date Jul 14, 2011
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PTC DEVICE AND PROCESS FOR MANUFATURING THE SAME
    • Publication number 20100237981
    • Publication date Sep 23, 2010
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Protection Device
    • Publication number 20100013591
    • Publication date Jan 21, 2010
    • Hiroyuki Koyama
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Sealing piece and battery pack using the same
    • Publication number 20100015522
    • Publication date Jan 21, 2010
    • Takashi Hasunuma
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    PTC Device
    • Publication number 20090224865
    • Publication date Sep 10, 2009
    • Tyco Electronics Raychem KK
    • Arata Tanaka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Thermistor
    • Publication number 20080068125
    • Publication date Mar 20, 2008
    • Tyco Electronics Raychem KK
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Ptc element and fluorescent lamp starter circuit
    • Publication number 20070170831
    • Publication date Jul 26, 2007
    • Tyco Electronics Raychem KK
    • Takashi Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Ptc thermistor and method for protecting circuit
    • Publication number 20070057759
    • Publication date Mar 15, 2007
    • Tyco Electronics Raychem KK
    • Hiroyuki Koyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Combined ptc device
    • Publication number 20060244563
    • Publication date Nov 2, 2006
    • Tyco Electronics Raychem KK
    • Hiroyuki Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Polymer ptc thermistor and temperature sensor
    • Publication number 20050062581
    • Publication date Mar 24, 2005
    • Hiroyuki Koyama
    • G01 - MEASURING TESTING