Patents by Inventor Frank W. Eschen

Frank W. Eschen 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).

  • Friction material for railroad brake shoes
    Patent number: 4352750
    Abstract: A railroad brake shoe composition free of fiber reinforcement comprising, in percent by weight:Phenolic Resin Binder: 1-15%Carbonaceous Component: 30-60%Organic Component: 15-30%Inorganic Component: 5-35%Friction Modifiers: 1-15%Additives: 1-7%.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: October 5, 1982
    Assignee: Manville Service Corporation
    Inventor: Frank W. Eschen