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Ryohei AKIYOSHI

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  • Kariya-city, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat-resistant IR alloy
    • Patent number 11,773,473
    • Issue date Oct 3, 2023
    • Ishifuku Metal Industry Co., Ltd.
    • Shunsuke Yokota
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Heat-resistant Ir alloy
    • Patent number 11,505,848
    • Issue date Nov 22, 2022
    • Ishifuku Metal Industry Co., Ltd.
    • Shunsuke Yokota
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Heat-resistant Ir alloy wire
    • Patent number 11,486,024
    • Issue date Nov 1, 2022
    • Ishifuku Metal Industry Co., Ltd.
    • Shunsuke Yokota
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Heat-resistant Ir alloy
    • Patent number 11,131,008
    • Issue date Sep 28, 2021
    • Ishifuku Metal Industry Co., Ltd.
    • Shunsuke Yokota
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Spark plug electrode and spark plug
    • Patent number 10,938,186
    • Issue date Mar 2, 2021
    • Denso Corporation
    • Ryohei Akiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug for internal combustion engine that makes re-discharge l...
    • Patent number 10,777,974
    • Issue date Sep 15, 2020
    • Denso Corporation
    • Noriaki Nishio
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 10,693,280
    • Issue date Jun 23, 2020
    • Ryohei Akiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug for internal combustion engine
    • Patent number 10,505,347
    • Issue date Dec 10, 2019
    • Denso Corporation
    • Masamichi Shibata
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug for internal combustion engine
    • Patent number 10,431,960
    • Issue date Oct 1, 2019
    • Denso Corporation
    • Ryuichi Ohno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug
    • Patent number 10,348,060
    • Issue date Jul 9, 2019
    • Denso Corporation
    • Tomoyuki Watanabe
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug and manufacturing method thereof
    • Patent number 10,050,417
    • Issue date Aug 14, 2018
    • Denso Corporation
    • Ryohei Akiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Ignition control system
    • Patent number 9,935,429
    • Issue date Apr 3, 2018
    • Denso Corporation
    • Ken Hanashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Spark plug for an internal combustion engine
    • Patent number 9,847,622
    • Issue date Dec 19, 2017
    • Denso Corporation
    • Ryohei Akiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    HEAT-RESISTANT IR-PT ALLOY
    • Publication number 20230383381
    • Publication date Nov 30, 2023
    • ISHIFUKU METAL INDUSTRY CO., LTD.
    • Kenta TERAI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SPARK PLUG
    • Publication number 20230056816
    • Publication date Feb 23, 2023
    • DENSO CORPORATION
    • Ryohei AKIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    HEAT-RESISTANT IR ALLOY
    • Publication number 20220282358
    • Publication date Sep 8, 2022
    • ISHIFUKU METAL INDUSTRY CO., LTD.
    • Shunsuke YOKOTA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    HEAT-RESISTANT IR ALLOY
    • Publication number 20220170135
    • Publication date Jun 2, 2022
    • ISHIFUKU METAL INDUSTRY CO., LTD.
    • Shunsuke YOKOTA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    HEAT- RESISTANT IR ALLOY WIRE
    • Publication number 20220170136
    • Publication date Jun 2, 2022
    • ISHIFUKU METAL INDUSTRY CO., LTD.
    • Shunsuke YOKOTA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    SPARK PLUG ELECTRODE AND SPARK PLUG
    • Publication number 20200321756
    • Publication date Oct 8, 2020
    • DENSO CORPORATION
    • Ryohei Akiyoshi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20200112145
    • Publication date Apr 9, 2020
    • DENSO CORPORATION
    • Ryohei AKIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
    • Publication number 20190386467
    • Publication date Dec 19, 2019
    • DENSO CORPORATION
    • Noriaki NISHIO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    HEAT-RESISTANT IR ALLOY
    • Publication number 20190338395
    • Publication date Nov 7, 2019
    • ISHIFUKU METAL INDUSTRY CO., LTD.
    • Shunsuke YOKOTA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
    • Publication number 20190214792
    • Publication date Jul 11, 2019
    • DENSCO CORPORATION
    • Ryuichi OHNO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
    • Publication number 20190199068
    • Publication date Jun 27, 2019
    • Denso Corporation
    • Masamichi SHIBATA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG AND MANUFACTURING METHOD THEREOF
    • Publication number 20180062357
    • Publication date Mar 1, 2018
    • DENSO CORPORATION
    • Ryohei AKIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG
    • Publication number 20180062355
    • Publication date Mar 1, 2018
    • DENSO CORPORATION
    • Tomoyuki WATANABE
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SPARK PLUG FOR AN INTERNAL COMBUSTION ENGINE
    • Publication number 20170279248
    • Publication date Sep 28, 2017
    • DENSO CORPORATION
    • Ryohei AKIYOSHI
    • H01 - BASIC ELECTRIC ELEMENTS