Patents by Inventor John Roll

John Roll 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).

  • Method for heating a solid surface such as a floor, wall, or countertop surface
    Patent number: 5932124
    Abstract: A method is provided for heating the surface of a material such as a floor, wall, roof, or countertop. The method comprises providing a laminated heater element, disposing the heater element at a predetermined depth in the material and energizing the element at prescribed intervals and temperatures which are effective to heat the surface of the material.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: August 3, 1999
    Assignee: Thermion Systems International
    Inventors: Charles G. Miller, John A. Rolls, Otis H. Hastings