Patents by Inventor Doug E. MacArthur

Doug E. MacArthur 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).

  • Foam, Foam-resin composite and method of making a foam-resin composite
    Patent number: 5380768
    Abstract: This invention relates to a foam, a foam-resin composite and a method of making foam-resin composites. The foam set forth in this invention comprises a urethane modified polyisocyanurate derived from an aromatic amino polyol and a polyether polyol. In addition to the polyisocyanurate foam, the composite of this invention further contains a resin layer, wherein the resin may be epoxy, bismaleimide, or phenolic resin. Such resins generally require cure or post-cure temperatures of at least 350.degree. F.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: January 10, 1995
    Assignee: Martin Marietta Corporation
    Inventors: John A. Cranston, Doug E. MacArthur