TREA

Masao Hoshikawa

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  • Yokohama, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical fiber cable
    • Patent number 4,097,119
    • Issue date Jun 27, 1978
    • Sumitomo Electric Industries, Ltd.
    • Hiroyuki Kumamaru
    • G02 - OPTICS
  • Information Patent Grant

    O-Type optical waveguide
    • Patent number 4,088,388
    • Issue date May 9, 1978
    • Sumitomo Electric Industries, Ltd.
    • Tsuneo Nakahara
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL