Patents by Inventor Arthur C. Ellsworth

Arthur C. Ellsworth 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).

  • Method of preparing chromium
    Patent number: 3983016
    Abstract: Disclosed is a method of operating a chromium metal electrolytic cell in series with a chromic acid cell. The feed to the chromium metal cell is the chromic acid-alkali metal dichromate effluent from the chromic acid cell and the product of the chromium metal cell is chromium metal and depleted chromic acid-alkali metal dichromate solution. The depleted chromic acid-alkali metal dichromate solution is recycled to the chromic acid cell with make up alkali metal chromate and alkali metal dichromate.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: September 28, 1976
    Assignee: PPG Industries, Inc.
    Inventors: Arthur C. Ellsworth, William W. Carlin