Patents by Inventor Thomas Franklin Foltz

Thomas Franklin Foltz 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).

  • Refractory castable
    Patent number: 3992214
    Abstract: This invention relates to refractory castables containing a heat resistant aggregate and calcium aluminate cement plus the addition of +35 mesh silicon carbide wherein such castable may be used at temperatures up to 3200.degree. F. with the required strength.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: November 16, 1976
    Assignee: Dresser Industries, Inc.
    Inventors: Daniel Ralph Petrak, Thomas Franklin Foltz