Patents by Inventor David A. San Paolo

David A. San Paolo 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).

  • Fire resistant panel door
    Patent number: 5417024
    Abstract: A fire resistant panel door is constructed from panels, stiles, mullion and rails having a core of fire resistant material. The door components are joined together so that the fire resistant material extends substantially continuously from side to side and from top to bottom of the finished door. The fire resistant core of each door panel is recessed within the fire resistant core of the associated rails and stiles to reduce air infiltration through the door which can compromise the door's fire resistance.
    Type: Grant
    Filed: October 23, 1993
    Date of Patent: May 23, 1995
    Assignee: The Maiman Company
    Inventor: David A. San Paolo