Patents by Inventor Michael James Ennis

Michael James Ennis 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).

  • Built-up roof system
    Publication number: 20030186045
    Abstract: The present invention is an improved built-up roof system comprising an insulation layer, a coverboard layer, and a waterproofing membrane layer, wherein the coverboard layer comprises polyester foam.
    Type: Application
    Filed: February 28, 2003
    Publication date: October 2, 2003
    Inventors: Trevor Wardle, Michael James Ennis, Jeffrey M. Hansbro