Patents by Inventor Hans Heitzenroder

Hans Heitzenroder 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).

  • Internally pressurized package with heat-sealable closure member
    Patent number: 4715494
    Abstract: A pressure-tight packaging, intended particularly for tennis balls, has an opening (3) which is adapted to be sealed by a closure member (4) upon pressurizing the container. Closure member (4) is of substantially planar configuration and is made of a plastics material, which is first warmed by the pressurizing gas on filling the container and is then forced into abutment with the container wall by the gas pressure so as to become welded or glued to the container wall and thus to seal the opening (3).
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: December 29, 1987
    Assignee: Dunlop Limited a British Company
    Inventors: Hans Heitzenroder, Eckhard Merz