Patents by Inventor Robert Schruhl

Robert Schruhl 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).

  • Multilayer plastic film, process for its production and its use
    Patent number: 4370374
    Abstract: The invention provides a multilayer plastics film comprising at least two film layers, one of which has a thickness of 10 to 50 .mu.m and a softening point of 140.degree. to 200.degree. C., and the other of which has a thickness of 10 to 50 .mu.m, a softening point of 70.degree. to 130.degree. C. and initial melting point of from 100.degree. to 190.degree. C., there being a temperature difference of from 30.degree. to 60.degree. C. between the softening point and initial melting point of the latter film. The invention also provides processes for making such multilayer plastics films and their use for applying to articles, particularly foamed plastics, a firmly adhering skin.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: January 25, 1983
    Assignee: Plate Bonn Gesellschaft mit beschrankter Haftung
    Inventors: Fritz Raabe, Robert Schruhl