Patents by Inventor Kenneth Ray Cartmill

Kenneth Ray Cartmill 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).

  • Rolled rigid foam
    Patent number: 6228296
    Abstract: A method for continuously producing a rigid polymer foam in rolled form comprising (a) continuously conveying a carrier along a production line, (b) depositing on the carrier a foam-forming mixture, a regulating means being located on the production line to ensure deposition of only enough of the foam-forming mixture for production, after foaming and curing, of a rigid foam having a maximum thickness of less than 1 inch, (c) foaming and curing the deposited foam-forming mixture to produce a rigid foam, and (d) rolling the rigid foam.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: May 8, 2001
    Assignee: Celotex Corporation
    Inventors: Kenneth Ray Cartmill, Gregory Wayne Lynn