Patents by Inventor Alvin D. Cronberg

Alvin D. Cronberg 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).

  • Ion exchange process for the purification of base metal electrolyte solutions
    Patent number: 4067802
    Abstract: A co-reagent system in the form of an admixture of a metal chelation collector and a mono- or dialkyl substituted phosphoric acid is adapted for selectively removing ferric iron from base metal electrolytic solutions in accordance with the liquid-liquid ion exchange extraction technique.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: January 10, 1978
    Assignee: Ashland Oil, Inc.
    Inventors: Alvin D. Cronberg, James A. Hartlage, Joe W. Cotton