Patents by Inventor Razmik Vartan-Boghossian

Razmik Vartan-Boghossian 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).

  • Aqueous dispersions of polyurethane
    Patent number: 5169895
    Abstract: An aqueous dispersion of a water-dispersible polyurethane, said polyurethane comprising the reaction product of:(a) a water-dispersible isocyanate-terminated polyurethane prepolymer having an NCO content of 2.1 to 10% by weight,(b) an organic polyisocyanate having an average isocyanate functionality of 2.1 to 4.0, and(c) an active hydrogen-containing chain extender.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: December 8, 1992
    Assignee: ICI Americas, Inc.
    Inventors: Richard G. Coogan, Razmik Vartan-Boghossian
  • Aqueous dispersions of a nonionic, water dispersible polyurethane having pendent polyoxyethylene chains
    Patent number: 5043381
    Abstract: An aqueous dispersion of a nonionic water-dispersible polyurethane having pendent polyoxyethylene chains and one crosslink per 3,000 to 100,000 atomic weight units. The dispersions are useful as coating compositions.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: August 27, 1991
    Assignee: ICI Americas, Inc.
    Inventors: Richard G. Coogan, Razmik Vartan-Boghossian
  • Aqueous dispersion of a nonionic, water-dispersible polyurethane
    Patent number: 4992507
    Abstract: An aqueous dispersion of a nonionic, water-dispersible polyurethane having pendent polyoxyethylene chains and free acid or free tertiary amino groups. The dispersions are useful as coating compositions.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: February 12, 1991
    Assignee: ICI Americas, Inc.
    Inventors: Richard G. Coogan, Razmik Vartan-Boghossian, Milton Lapkin
  • Aqueous dispersions
    Patent number: 4927876
    Abstract: An aqueous polymer dispersion containing a water-dispersible polyurethane and a vinyl polymer, the polyurethane being the product of reacting an active hydrogen containing chain extender with a water-dispersible isocyanate-terminated polyurethane prepolymer derived from a polyisocyanate component containing at least 5% by weight of 2,4'-diphenylmethane diisocyanate. The dispersions are useful as coating compositions.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: May 22, 1990
    Assignee: ICI Americas Inc.
    Inventors: Richard G. Coogan, Razmik Vartan-Boghossian