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Yutaka YOKOYAMA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Spark plug
    • Patent number 11,183,819
    • Issue date Nov 23, 2021
    • NGK Spark Plug Co., Ltd.
    • Yutaka Yokoyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 10,879,675
    • Issue date Dec 29, 2020
    • NGK Spark Plug Co., Ltd.
    • Haruki Yoshida
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 10,586,627
    • Issue date Mar 10, 2020
    • NGK Spark Plug Co., Ltd.
    • Haruki Yoshida
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Spark plug
    • Patent number 10,424,901
    • Issue date Sep 24, 2019
    • NGK Spark Plug Co., Ltd.
    • Jumpei Isasa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 10,193,311
    • Issue date Jan 29, 2019
    • NGK Spark Plug Co., Ltd.
    • Yutaka Yokoyama
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Spark plug
    • Patent number 9,912,125
    • Issue date Mar 6, 2018
    • NGK Spark Plug Co., Ltd.
    • Haruki Yoshida
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 9,755,404
    • Issue date Sep 5, 2017
    • NGK Spark Plug Co., Ltd.
    • Jumpei Isasa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 9,653,888
    • Issue date May 16, 2017
    • NGK Spark Plug Co., Ltd.
    • Yutaka Yokoyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 9,385,511
    • Issue date Jul 5, 2016
    • NGK Spark Plug Co., Ltd.
    • Hiroki Takeuchi
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Insulator for spark plug and spark plug
    • Patent number 9,160,145
    • Issue date Oct 13, 2015
    • NGK Spark Plug Co., Ltd.
    • Katsuya Takaoka
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Ceramic heater and glow plug
    • Patent number 8,227,726
    • Issue date Jul 24, 2012
    • NGK Spark Plug Co., Ltd.
    • Koji Funaki
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    SPARK PLUG
    • Publication number 20200112146
    • Publication date Apr 9, 2020
    • NGK SPARK PLUG CO., LTD.
    • Yutaka Yokoyama
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    SPARK PLUG
    • Publication number 20190131776
    • Publication date May 2, 2019
    • NGK Spark Plug Co., Ltd.
    • Jumpei ISASA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20180374601
    • Publication date Dec 27, 2018
    • NGK SPARK PLUG CO., LTD.
    • Haruki YOSHIDA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20180048126
    • Publication date Feb 15, 2018
    • NGK Spark Plug Co., Ltd.
    • Yutaka YOKOYAMA
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    SPARK PLUG
    • Publication number 20170353013
    • Publication date Dec 7, 2017
    • NGK SPARK PLUG CO., LTD.
    • Haruki YOSHIDA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20170093132
    • Publication date Mar 30, 2017
    • NGK Spark Plug Co., Ltd.
    • Jumpei ISASA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20170093134
    • Publication date Mar 30, 2017
    • NGK SPARK PLUG CO., LTD.
    • Yutaka YOKOYAMA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20170093133
    • Publication date Mar 30, 2017
    • NGK SPARK PLUG CO., LTD.
    • Haruki YOSHIDA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20150207300
    • Publication date Jul 23, 2015
    • NGK Spark Plug Co., Ltd.
    • Hiroki Takeuchi
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    INSULATOR FOR SPARK PLUG AND SPARK PLUG
    • Publication number 20140336035
    • Publication date Nov 13, 2014
    • NGK Spark Plug Co., Ltd.
    • Katsuya TAKAOKA
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    Ceramic Heater and Glow Plug
    • Publication number 20090194519
    • Publication date Aug 6, 2009
    • NGK Spark Plug Co., Ltd.
    • Koji Funaki
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES