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Hidefumi Akiyama

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  • Tokyo, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    SEMICONDUCTOR LASER
    • Publication number 20220360044
    • Publication date Nov 10, 2022
    • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    • Takahiro NAKAMURA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SEMICONDUCTOR LASER
    • Publication number 20220360049
    • Publication date Nov 10, 2022
    • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    • Takahiro NAKAMURA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LIGHT EMITTING ELEMENT, REFERENCE LIGHT SOURCE AND METHOD FOR OBSER...
    • Publication number 20170191872
    • Publication date Jul 6, 2017
    • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    • Hidefumi AKIYAMA
    • G02 - OPTICS
  • Information Patent Application

    Growing smooth semiconductor layers
    • Publication number 20050221624
    • Publication date Oct 6, 2005
    • Hidefumi Akiyama
    • C30 - CRYSTAL GROWTH
  • Information Patent Application

    Growing smooth semiconductor layers
    • Publication number 20030173559
    • Publication date Sep 18, 2003
    • Hidefumi Akiyama
    • C30 - CRYSTAL GROWTH