TREA

David H. Dawson

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  • Green River, WY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Centrifugal extrusion apparatus which heat plastifies material by m...
    • Patent number 4,050,874
    • Issue date Sep 27, 1977
    • The Dow Chemical Company
    • Douglas S. Chisholm
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tube treating and apparatus therefor
    • Patent number 4,028,037
    • Issue date Jun 7, 1977
    • The Dow Chemical Company
    • David H. Dawson
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for the preparation of plastic lined pipe
    • Patent number 3,959,424
    • Issue date May 25, 1976
    • The Dow Chemical Company
    • David H. Dawson
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tube treating and method
    • Patent number 3,939,243
    • Issue date Feb 17, 1976
    • The Dow Chemical Company
    • David H. Dawson
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL