Patents by Inventor Johannes Stawowy

Johannes Stawowy 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).

  • Natural fiber containing molding compounds based on unsaturated polyester resins, and molded bodies obtained from the molding compounds
    Patent number: 5231121
    Abstract: Molding compositions based on unsaturated polyester (UP) resins and containing natural fibers are prepared from which molded parts can be produced by hot pressing. The molded parts have a residual styrene content <0.1 wt. %. The UP resins are comprised of a customary UP and a mixture of styrene and di(meth)acrylic acid ester(s).
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: July 27, 1993
    Assignee: Huls Aktiengesellschaft
    Inventors: Horst Kramer, Johannes Stawowy
  • Unsaturated polyester resin and molding compounds obtained therefrom
    Patent number: 4837270
    Abstract: Thermosetting and cold-setting unsaturated polyester resin molding compounds which contain only one saturated polyester as LP additive and which do not show LP drift under usual storage conditions, are provided. Molded articles molded therefrom exhibit low shrinking and a perfect surface.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: June 6, 1989
    Assignee: Huels Aktiengesellschaft
    Inventors: Horst Kraemer, Hartmut Rohmer, Johannes Stawowy