Patents by Inventor Larry G. Criswell

Larry G. Criswell 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).

  • Enrichment and concentration of proteins by ultrafiltration
    Patent number: 4897465
    Abstract: Disclosed are ultrafiltration processes for the enrichment and concentration of selected proteins from protein conaining fluids. Illustratively, IgG is concentrated from whey by means of multiple ultrafiltration "passes", using a metallic oxide ultrafiltration membrane, which are characterized by differing pH's.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: January 30, 1990
    Assignee: Abbott Laboratories
    Inventors: Christopher T. Cordle, Larry G. Criswell, Ronald L. Thomas