Patents by Inventor Kenneth Elliot Piggott

Kenneth Elliot Piggott 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).

  • Air-drying or heat-curable polyurethane coating compositions
    Patent number: 4005041
    Abstract: Air-drying or heat-curable coating compositions are based on allyl ether group-containing isocyanate adducts which are obtained by reacting isophorone diisocyanate with a polyhydroxy compound to give an intermediate containing free isocyanate groups, and then condensing the intermediate with an hydroxyl group-containing allyl ether of an aliphatic diol or polyol.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: January 25, 1977
    Assignee: Prolux Paint Manufacturers (PTY) Limited
    Inventor: Kenneth Elliot Piggott
  • Coating compositions
    Patent number: 3991003
    Abstract: Two-component air-drying varnishes and pigmented enamels comprise the following, dissolved in an essentially aliphatic liquid medium: (i) a film-forming adduct of isophorone diisocyanate and the condensation product of a polybasic acid with an epoxy compound, and (ii) a film-forming polyhydroxy compound, the components (i) and (ii) being mutually compatible.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: November 9, 1976
    Assignee: Prolux Paint Manufacturers Limited (PTY)
    Inventor: Kenneth Elliot Piggott