Patents by Inventor Sven E. Bergentz

Sven E. Bergentz 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).

  • Patent number: 5001062
    Abstract: An article adapted for applications where there is contact with blood and especially in medical applications is prepared by adsorbing the enzyme, lysozyme or derivative thereof, onto a substrate and then adsorbing heparin or a heparin-based material to the enzyme. The substrate is preferably a metal or polymeric material.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: March 19, 1991
    Assignee: Camurus AB
    Inventors: Kare V. Larsson, Sven E. Bergentz, Bengt L. T. Lindblad
  • Patent number: 4729766
    Abstract: The invention relates to a vascular prosthesis in the form of a flexible tube which can be implanted in animals or human beings, with a regular pattern of blind holes in the external surface of the tube, which are regular with regard to direction, transverse dimensions and depth and are produced by laser treatment.The invention also relates to a method of producing such a vascular prosthesis consisting in that the holes are produced by means of pulsated laser beams along one or more helical lines, the tube being rotated and displaced axially at the same time.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: March 8, 1988
    Assignee: Astra Meditec Aktiebolag
    Inventors: Sven E. Bergentz, Kjell Bockasten, Kurt Strid