Patents by Inventor Eva M. Vary

Eva M. Vary 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).

  • Fluoropolymer blend coating compositions containing copolymers of perfluorinated polyvinyl ether
    Patent number: 4252859
    Abstract: Blends of PTFE and perfluorinated ether copolymers of TFE and perfluoro(propyl vinyl ether) provide coating compositions which have reduced crystallinity and useful lives superior to what would be expected from averaging the properties of the unblended resins themselves.
    Type: Grant
    Filed: October 31, 1978
    Date of Patent: February 24, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas P. Concannon, Eva M. Vary
  • Finishes having improved scratch resistance prepared from compositions of fluoropolymer, mica particles or metal flake, a polymer of monoethylenically unsaturated monomers and a liquid carrier
    Patent number: 4123401
    Abstract: Compositions containing(a) fluoropolymer,(b) mica particles, mica particles coated with pigment, or metal flake,(c) a polymer of ethylenically unsaturated monomers, and(d) a liquid carrierAre useful for coating metal, especially cookware, to give lubricious surfaces.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: October 31, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jacques M. L. Berghmans, Eva M. Vary
  • Fluorocarbon polymer coatings
    Patent number: 4118537
    Abstract: Coating compositions containing(a) a fluorocarbon polymer and(b) a polymer which depolymerizes, and whose depolymerization products vaporize, at the fluorocarbon polymer fusion temperature,When applied to cookware over certain primers containing colloidal silica, give films with greater density and less porosity than conventional fluorocarbon polymer compositions.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: October 3, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Eva M. Vary, Eustathios Vassiliou
  • Aqueous dispersion of an aryloxysulfone copolymer
    Patent number: 4021395
    Abstract: The novel aqueous coating composition contains a uniformly dispersed aryloxysulfone copolymer and forms a finish that has good release properties, excellent stain resistance, good thermal stability, scratch, mar and impact resistance, and that is particularly useful as a finish for bakeware and cookware and is also useful as a finish for appliances for industrial equipment.
    Type: Grant
    Filed: June 5, 1975
    Date of Patent: May 3, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Eva M. Vary
  • Arloxysulfone copolymer solution having perfluoro-carbon polymer particles dispersed therein
    Patent number: 3992347
    Abstract: The novel coating composition contains a uniformly dispersed perfluorocarbon polymer in an organic solvent solution of an aryloxysulfone copolymer; finishes of the novel composition have excellent grease and stain resistance, good thermal stability, toughness and durability and good release properties and are useful as release finishes for bakeware and cookware and can be used as coatings for appliances and industrial equipment.
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: November 16, 1976
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Eva M. Vary