Patents by Inventor Rolf Orth

Rolf Orth 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).

  • Process for the production of a polypropylene composite
    Patent number: 5300361
    Abstract: In composites comprising at least one solid base layer of a propylene polymer and a foam layer likewise of a propylene polymer, these layers can be bonded by softening only the side of the base layer facing the foam layer and optionally provided with relief structures by warming, and pressing the base layer and foam layer together, giving a very strong bond.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: April 5, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Vowinkel, Franz Gubitz, Rolf Orth