Patents Assigned to Ralph N. Hakim
  • Plastic-coated concrete form panel
    Patent number: 5464680
    Abstract: Plastic-coated plywood, useful as a concrete form panel, having a topcoat of catalyzed moisture-cured isocyanate-terminated urethane prepolymer with a smooth surface having high gloss, durably adhered to the plywood by an alkali-resistant seal-prime coat.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: November 7, 1995
    Assignees: WorldTech Coatings, Inc., Ralph N. Hakim
    Inventors: Edward R. Hauser, David D.-L. Lu