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Keiji Nakazawa

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical apparatus
    • Patent number 9,748,731
    • Issue date Aug 29, 2017
    • Sumitomo Electric Device Innovations, Inc.
    • Keiji Nakazawa
    • G02 - OPTICS
  • Information Patent Grant

    Method for fabricating optical device
    • Patent number 8,537,867
    • Issue date Sep 17, 2013
    • Sumitomo Electric Device Innovations, Inc.
    • Keiji Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Optical device and method for fabricating optical device
    • Patent number 8,391,325
    • Issue date Mar 5, 2013
    • Sumitomo Electric Device Innovations, Inc.
    • Keiji Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL APPARATUS
    • Publication number 20150280395
    • Publication date Oct 1, 2015
    • SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    • Keiji NAKAZAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    METHOD FOR FABRICATING OPTICAL DEVICE
    • Publication number 20130140284
    • Publication date Jun 6, 2013
    • SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    • Keiji Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    OPTICAL DEVICE AND METHOD FOR FABRICATING OPTICAL DEVICE
    • Publication number 20120027036
    • Publication date Feb 2, 2012
    • SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    • Keiji Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LASER DEVICE
    • Publication number 20100246620
    • Publication date Sep 30, 2010
    • SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    • Hideki Maruyama
    • H01 - BASIC ELECTRIC ELEMENTS