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Wietsma Popke

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  • EM Velp, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat sealable PVC blends
    • Patent number 5,166,269
    • Issue date Nov 24, 1992
    • BASF Corporation
    • Popke Wietsma
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Continuous process of making a gelled rubber foam product
    • Patent number 5,096,641
    • Issue date Mar 17, 1992
    • BASF Corporation
    • Wietsma Popke
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Thickeners
    • Patent number 4,657,943
    • Issue date Apr 14, 1987
    • Polysar Financial Services S.A.
    • Popke Wietsma
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Preparation of impregnated fibers
    • Patent number 4,081,318
    • Issue date Mar 28, 1978
    • Chemische Industrie AKU-Goodrich B.V.
    • Popke Wietsma
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Process for the impregnation of a wet fiber web with a heat sensiti...
    • Patent number 4,018,647
    • Issue date Apr 19, 1977
    • Chemische Industrie AKU-Goodrick B.V.
    • Popke Wietsma
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Latex for forming non-gelling vulcanizable solid foam
    • Patent number 3,948,822
    • Issue date Apr 6, 1976
    • Chemische Industrie AKU-Goodrich B.V.
    • Popke Wietsma
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...