Patents by Inventor Gunnar Knudsen

Gunnar Knudsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for the manufacture of a packing material with good gas-tightness properties
    Patent number: 4460425
    Abstract: The invention relates to a method for the manufacture of packing material with good gas-tightness properties by coating a web or a sheet of paper with an aqueous solution containing polyvinyl alcohol and a thickener, e.g. carboxymethylcellulose, subsequently the water is boiled away and the coating layer formed is covered with a thin plastic film.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: July 17, 1984
    Assignee: Tetra Pak International A.B.
    Inventors: Jan A. I. Rauser, Gunnar Knudsen