Patents by Inventor Walter Widmaier

Walter Widmaier 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).

  • Molded styrene polymer articles from vacuum-formed or thermoformed S-B-S block copolymer sheets
    Patent number: 4096224
    Abstract: Sheets produced by the extrusion of a mixture of about 85 - 95 percent by weight of polystyrene or semi-impact-resistant polystyrene and about 5 - 15 percent by weight of a diene-styrene block copolymer having the structure S-B-S wherein S represents the styrene structure and B represents the butadiene or isoprene structure are used for the manufacture of molded articles in the vacuum-forming or thermoforming method.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: June 20, 1978
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Gunter Simon, Walter Widmaier, Karl-Ulrich Reichert