TREA

Osamu Kouda

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  • Hiratsuka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and apparatus for manufacturing a corrugated pipe
    • Patent number 5,042,138
    • Issue date Aug 27, 1991
    • Mitsubishi Plastics Industries, Ltd.
    • Noboru Umemori
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Corrugated pipe
    • Patent number 4,976,289
    • Issue date Dec 11, 1990
    • Mitsubishi Plastics Industries Limited
    • Noboru Umemori
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL