Patents by Inventor Henry E. Fritz

Henry E. Fritz 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).

  • Transport of aqueous coal slurries
    Patent number: 4242098
    Abstract: Compositions containing small amounts of named water soluble polymers in an aqueous coal slurry permit the extrusion, pumping and transport of higher solids content aqueous coal slurries.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: December 30, 1980
    Assignee: Union Carbide Corporation
    Inventors: David B. Braun, Stephen Drap, Henry E. Fritz, Arthur K. Ingberman