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Yuji Kato

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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical product and method for manufacturing same
    • Patent number 9,069,125
    • Issue date Jun 30, 2015
    • Tokai Optical Co., Ltd.
    • Shinya Hirasawa
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Display unit
    • Patent number 8,182,084
    • Issue date May 22, 2012
    • Tokai Optical Co., Ltd.
    • Tetsuo Kozaki
    • G02 - OPTICS
  • Information Patent Grant

    Spectacle lens and spectacle
    • Patent number 7,926,939
    • Issue date Apr 19, 2011
    • Tokai Optical Co., Ltd.
    • Yuji Kato
    • G02 - OPTICS
  • Information Patent Grant

    Plastic lens for spectacles
    • Patent number 7,178,919
    • Issue date Feb 20, 2007
    • Tokai Kogaku Co., Ltd.
    • Yuji Kato
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents