Patents by Inventor Walter J. Thorsen

Walter J. Thorsen 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).

  • Apparatus for treatment of fibers with ozone-steam mixtures
    Patent number: 4300367
    Abstract: Fibers are treated with ozone-steam mixtures by conveying them through an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. The fibers are exposed to the ozone-steam mixture in the horizontal middle section wherein the ozone is centrally introduced.An apparatus for carrying out this method includes an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. Also included are means for moving the substances through the chamber, means for centrally supplying ozone to the horizontal middle region of the chamber and means for supplying steam to the horizontal middle region of the chamber.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: November 17, 1981
    Assignee: The United States of America as represented by the Secretary of the Department of Agriculture
    Inventor: Walter J. Thorsen
  • Method for treatment of fibers with ozone-steam mixtures
    Patent number: 4214330
    Abstract: Fibers are treated with ozone-steam mixtures by conveying them through an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. The fibers are exposed to the ozone-steam mixture in the horizontal middle section wherein the ozone-steam mixture is centrally introduced.An apparatus for carrying out this method includes an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. Also included are means for moving the substances through the chamber and means for supplying an ozone-steam mixture to the horizontal middle region of the chamber.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: July 29, 1980
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Walter J. Thorsen
  • Method of shrinkproofing animal fibers with ozone
    Patent number: 4189303
    Abstract: Proteinaceous animal fibrous materials are shrinkproofed by contacting the material with an aqueous solution of ozone at a temperature of about 0.degree. to 50.degree. C. for a period of time and at a concentration sufficient to shrinkproof the material but insufficient to cause degradation of the material.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: February 19, 1980
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Walter J. Thorsen