Patents by Inventor Borje Lundberg

Borje Lundberg 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).

  • Sound attenuating walls
    Patent number: 3950912
    Abstract: A sound attenuating wall comprises a skeleton frame, surface layers secured thereto, skeleton frame members, and an insulation provided between the skeleton frame members and the surface layers, respectively. The skeleton frame members are formed by two elements which in point of strength act separately of each other and are interconnected by portions of material which are weak or slender in the direction of the plane of the wall. The insulation disposed in the wall fills out only part of the space therein.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: April 20, 1976
    Assignee: BPA Byggproduktion AB
    Inventors: Borje Lundberg, Bjorn Samuelsson