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Hiroji Henmi

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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    VALVE SEAT OF SINTERED IRON-BASED ALLOY
    • Publication number 20170089228
    • Publication date Mar 30, 2017
    • Kabushiki Kaisha Riken
    • Akiko SHIMADA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SINTERED IRON-BASED ALLOY VALVE SEAT
    • Publication number 20150152753
    • Publication date Jun 4, 2015
    • Kabushiki Kaisha Riken
    • Kimiaki Hashimoto
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    VALVE SEAT MADE OF IRON-BASED SINTERED ALLOY
    • Publication number 20130291822
    • Publication date Nov 7, 2013
    • Kabushiki Kaisha Riken
    • Rintarou Takahashi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    VALVE SEAT
    • Publication number 20120319026
    • Publication date Dec 20, 2012
    • Rintarou Takahashi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Iron-based sintered alloy with dispersed hard particles
    • Publication number 20050252338
    • Publication date Nov 17, 2005
    • Riken Corporation
    • Hiroji Henmi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Iron-based sintered alloy for use as valve seat and its production...
    • Publication number 20030230164
    • Publication date Dec 18, 2003
    • Hiroji Henmi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...