TREA

Yoichi Sakaguchi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tubular lining material for pipe line
    • Patent number 4,684,556
    • Issue date Aug 4, 1987
    • Tokyo Gas Co., Ltd.
    • Hisao Ohtsuga
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tubular lining material for pipe lines having bends
    • Patent number 4,576,205
    • Issue date Mar 18, 1986
    • Tokyo Gas Co., Ltd.
    • Akio Morinaga
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...