Patents by Inventor Francois Le Gac

Francois Le Gac 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).

  • Phenolic resin based laminate materials and procedure for their preparation
    Patent number: 4726996
    Abstract: A phenolic resin based laminate material which can be cross-linked by acid catalysis, endowed with a reinforcement, comprising at least two surfaces and having on at least one of its two surfaces at least one additional nonphenolic resin-based layer is disclosed.In accordance with the invention, the additional layer in contact with the phenolic resin is obtained from a formula comprising an unsaturated polyester resin, a cross-linking solvent of said resin, possibly one or several other additives, at least one of the main components having a formula comprising hydrophilic centers in a number at least equal to the number of non-saturation centers in the polymeric chain of the resin.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: February 23, 1988
    Assignee: Everitube, c/o Saint-Gobain Recherche
    Inventors: Francois Le Gac, Pierre Chevalier