Patents by Inventor Clarence A. Knutson, Jr.

Clarence A. Knutson, Jr. 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).

  • Production of high-pyruvate xanthan gum on synthetic medium
    Patent number: 4394447
    Abstract: A high-pyruvate xanthan gum, substantially free of insolubles and undesirable coloration, is produced by fermentation of Xanthomonas campestris on a carbohydrate-containing nutrient medium having (NH.sub.4).sub.2 HPO.sub.4 at a level of at least 0.15% as the primary nitrogen source, and having a total phosphate level of at least about 0.25%.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: July 19, 1983
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Martin C. Cadmus, Clarence A. Knutson, Jr.
  • Method for increasing solution viscosity of Arthrobacter stabilis polysaccharides
    Patent number: 4146705
    Abstract: The extracellular heteropolysaccharide produced by the bacterium Arthrobacter stabilis NRRL B-3225 is treated by acidification, drying, and controlled heating to substantially increase its viscosity in aqueous solutions and to tailor it to particular conditions of use.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: March 27, 1979
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Clarence A. Knutson, Jr.