Patents by Inventor John O. Kirkwold

John O. Kirkwold 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, system, and method for processing photothermographic elements
    Patent number: 6007971
    Abstract: An apparatus, system, and method for processing photothermographic elements. The apparatus thermally develops a photothermographic element by heating the photothermographic element between a heated member, having a resilient layer, and a plurality of rollers. The apparatus can be a component of other apparatus and systems including those having the ability to expose the photothermographic element to form a latent image.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: December 28, 1999
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Paul C. Star, John A. Svendsen, Alfredo G. Viglienzoni, John J. Allen, Michael P. Juaire, Anderson L. Griffin, John O. Kirkwold, Steven W. Sorensen, Ralph E. Peterson
  • Article and method for cooling a sheet of material while minimizing wrinkling and curling within the sheet
    Patent number: 5563681
    Abstract: A cooling article adapted for use with a thermal-processing apparatus for cooling a thermally-processable element after the element is heated by a heating member within the thermal-processing apparatus. The cooling article can include a cooling plate having a textured and/or perforated top surface positionable relative to the heated member so that the sheet slides on the top surface.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: October 8, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John O. Kirkwold, Roger H. Muntifering, Steven W. Sorensen, Thomas F. Gotich, Robert M. Biegler