Patents by Inventor Filip Bertil Thyberger

Filip Bertil Thyberger 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 of laying pipes or conduits in the ground and pipe arrangement produced thereby
    Patent number: 4075861
    Abstract: A method of laying heating medium conveying pipes, wherein a pipe receiving trench is prepared and pipes, wrapped in heat insulating jackets permitting transversal relative movements of the pipes within the jackets, are placed in the trench. The pipes and the insulating jackets are then bent to follow a serpentine path and the trench filled to cover the pipes.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: February 28, 1978
    Assignee: Granges Essem Aktiebolag
    Inventors: Filip Bertil Thyberger, Kurt Olle Ragnvald Lindstrom