Wyoming Inventors Database
Wyoming Inventors : Name Search Results

William Copenhafer has a total of 4 patent(s) in the database.

* Some patents in this database have one or more inventors, not all of whom may be from Wyoming.

 

  1. Patent Number: 4283372     View patent at USPTO
    Title: RECOVERY OF ALKALI VALUES FROM SODIUM BICARBONATE-CONTAINING ORE WITH AMMONIA
    Assignee: Intermountain Research and Development Corporation
    Issue Date: August 11, 1981
    Inventor(s): William C. Copenhafer, Yardley, PA
    William R. Frint, Green River, WY
    Michael L. Pinsky, Mt. Holly, NJ

  2. Patent Number: 5262134     View patent at USPTO
    Title: PROCESS FOR PRODUCING SODIUM SALTS FROM BRINES OF SODIUM ORES
    Assignee: FMC Corporation
    Issue Date: November 16, 1993
    Inventor(s): William C. Copenhafer, Yardley, PA
    William R. Frint, Green River, WY

  3. Patent Number: 5283054     View patent at USPTO
    Title: PROCESS FOR PRODUCING SODIUM SALTS FROM BRINES OF SODIUM ORES
    Assignee: FMC Corporation
    Issue Date: February 01, 1994
    Inventor(s): William C. Copenhafer, Yardley, PA
    Gerald F. Niedringhaus, Rock Springs, WY
    David E. Smith, Princeton, NJ

  4. Patent Number: 6428759     View patent at USPTO
    Title: PRODUCTION OF FEED LIQUORS FOR SODIUM CARBONATE CRYSTALLIZATION PROCESSES
    Assignee: FMC Wyoming Corporation
    Issue Date: August 6, 2002
    Inventor(s): Richard W. Chastain, Lyman, WY
    William C. Copenhafer, Yardley, PA
    David E. Smith, Princeton, NJ