Patents by Inventor Erik Wilhelm Wallin

Erik Wilhelm Wallin 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).

  • Heat welded joints between webs of reinforced plastic foil
    Patent number: 4010300
    Abstract: The invention refers to heat weld joints of the type used for adjoining webs of reinforced plastic foil intended for use as stretched ceiling covers. The invention consists in the provision of means at intervals along the heat weld joints for reinforcing same to withstand the influence of heat. The invention also covers a process for the preparation of such reinforced heat weld joints.
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: March 1, 1977
    Assignee: Barracudaverken Aktiebolag
    Inventor: Erik Wilhelm Wallin