Wyoming Inventors Database
Wyoming Inventors : Name Search Results

Duncan Williams has a total of 3 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: 2421918     View patent at USPTO
    Title: PROCESS OF PRODUCING ALUMINUM OXIDE SUBSTANTIALLY FREE FROM SILICA
    Assignee: Monolith Portland Midwest Company
    Issue Date: June 10, 1947
    Inventor(s): Frank J. Anderson, Laramie, WY
    Duncan R. Williams, Laramie, WY

  2. Patent Number: 2438488     View patent at USPTO
    Title: PROCESS OF MAKING ALUMINA UTILIZING KAOLIN, MARL, AND RELATED MATERIALS
    Assignee: Monolith Portland Midwest Company
    Issue Date: March 30, 1948
    Inventor(s): Frank J. Anderson, Laramie, WY
    Duncan R. Williams, Laramie, WY

  3. Patent Number: 2790725     View patent at USPTO
    Title: LOWERING THE VISCOSITY OF CEMENT SLURRY BY ADDITION OF CO2 GAS
    Assignee: Monolith Portland Midwest Company
    Issue Date: April 30, 1957
    Inventor(s): Duncan R. Williams, Laramie, WY