TREA

Yuji Kameo

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for producing optical fiber
    • Patent number 4,770,898
    • Issue date Sep 13, 1988
    • Sumitomo Electric Industries, Ltd.
    • Masakatsu Sugai
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Glass fiber for optical transmission
    • Patent number 4,655,545
    • Issue date Apr 7, 1987
    • Sumitomo Electric Industries, Ltd.
    • Toru Yamanishi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Wire-like structure twisting machine
    • Patent number 4,549,391
    • Issue date Oct 29, 1985
    • Sumitomo Electric Industries, Ltd.
    • Yuichi Toda
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coated plastic optical fiber
    • Patent number 4,458,986
    • Issue date Jul 10, 1984
    • Sumitomo Electric Industries, Ltd.
    • Masao Yuto
    • G02 - OPTICS
  • Information Patent Grant

    Method for manufacturing an optical fiber preform
    • Patent number 4,224,046
    • Issue date Sep 23, 1980
    • Nippon Telegraph & Telephone Public Corporation
    • Tatsuo Izawa
    • G02 - OPTICS