Patents by Inventor James M. Elstun

James M. Elstun 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).

  • Insulating sheathing with tough three-ply facers
    Patent number: 6093481
    Abstract: A method for continuously manufacturing an insulation board by facing a foam-forming composition with one or two facing sheets to form a singly or doubly faced composite, at least one sheet comprising either a tough polymeric layer or a laminate of a tough polymeric layer with at least one other facing material, the tough polymeric layer of at least one sheet facing to the outside of the composite, and foaming and curing the faced foam-forming mixture to produce an insulation board having an exceptional hardness and puncture resistance.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: July 25, 2000
    Assignee: Celotex Corporation
    Inventors: Gregory W. Lynn, Wayne E. Laughlin, James M. Elstun