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Ryuji Kishihara

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  • Kyoto-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Coil spring
    • Patent number 11,719,298
    • Issue date Aug 8, 2023
    • Suncall Corporation
    • Ryuji Kishihara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coil spring
    • Patent number 11,131,356
    • Issue date Sep 28, 2021
    • Suncall Corporation
    • Ryuji Kishihara
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Spiral spring manufacturing method
    • Patent number 9,782,819
    • Issue date Oct 10, 2017
    • Suncall Corporation
    • Ryuji Kishihara
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spiral spring
    • Patent number 9,400,026
    • Issue date Jul 26, 2016
    • Suncall Corporation
    • Ryuji Kishihara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve structure for internal combustion
    • Patent number 7,556,011
    • Issue date Jul 7, 2009
    • Suncall Corporation
    • Ryuji Kishihara
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

  • Information Patent Application

    COIL SPRING
    • Publication number 20210324930
    • Publication date Oct 21, 2021
    • Suncall Corporation
    • Ryuji KISHIHARA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COIL SPRING
    • Publication number 20210190163
    • Publication date Jun 24, 2021
    • SUNCALL CORPORATION
    • Ryuji KISHIHARA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COIL SPRING
    • Publication number 20210190162
    • Publication date Jun 24, 2021
    • Suncall Corporation
    • Ryuji KISHIHARA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COIL SPRING
    • Publication number 20190085927
    • Publication date Mar 21, 2019
    • Suncall Corporation
    • Ryuji KISHIHARA
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SPIRAL SPRING MANUFACTURING METHOD
    • Publication number 20160167106
    • Publication date Jun 16, 2016
    • Suncall Corporation
    • Ryuji KISHIHARA
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SPIRAL SPRING
    • Publication number 20150292585
    • Publication date Oct 15, 2015
    • SUNCALL CORPORATION
    • Ryuji Kishihara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Valve Structure for Internal Combustion
    • Publication number 20070277769
    • Publication date Dec 6, 2007
    • Ryuji Kishihara
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Valve Assembly
    • Publication number 20070241302
    • Publication date Oct 18, 2007
    • Ryuji Kishihara
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES