Patents by Inventor Heinz Nottelmann

Heinz Nottelmann 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 modification of the surfaces of polytetrafluoroethylene, modified molded elements based on polytetrafluoroethylene, and use of the same
    Patent number: 4975495
    Abstract: A method for the modification of the surface of polytetrafluoroethylene or of copolymers consisting mainly of polytetrafluoroethylene by the action of fluorides of silicone, germanium, phosphorus or arsenic on the surface of the copolymer which is heated to at least 150.degree. C. in the presence of moisture or by the subsequent action of water or steam. The fluorides used penetrate into the polymer to be modified and form a polymeric, tightly adhering network during hydrolysis.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: December 4, 1990
    Assignee: Volker Rossbach
    Inventors: Volker Rossbach, Mihal Karunaratna, Heinz Nottelmann, Johannes Windeln