Patents by Inventor Yue-guey L. Lee

Yue-guey L. Lee 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).

  • Polyamide-imide resin compositions and electrical conductors insulated therewith
    Patent number: 4459383
    Abstract: Novel polyamide-imide resin compositions, useful for electrically insulating conductors, are prepared by polycondensing a tribasic acid anhydride compound and a diisocyanate in an inert organic solvent in the presence of a catalytic amount of an oxyanion or amine compound at a high solids content, and controlling the reaction to prevent a great increase in viscosity.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: July 10, 1984
    Assignee: General Electric Company
    Inventor: Yue-Guey L. Lee
  • Polyetherimide resin and electrical conductors insulated therewith
    Patent number: 4423111
    Abstract: Novel high molecular weight resins, useful for electrically insulating conductors, are prepared by polycondensation of a dianhydride, or a mixture of two or more dianhydrides, and a diisocyanate in an inert organic solvent, preferably in the presence of a catalytic amount of 2-methylimidazole.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: December 27, 1983
    Assignee: General Electric Company
    Inventor: Yue-Guey L. Lee
  • Polyetheramideimide resins and electrical conductors insulated therewith
    Patent number: 4354965
    Abstract: Novel high molecular weight resins, useful for electrically insulating conductors, are prepared by polycondensing a mixture of anhydrides, and a diisocyanate and/or a diamine in an inert organic solvent, preferably in the presence of a catalytic amount of 2-methylimidazole.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: October 19, 1982
    Assignee: General Electric Company
    Inventors: Yue-Guey L. Lee, Otto S. Zamek
  • Modified polyamideimide resins
    Patent number: 4332925
    Abstract: Polyamideimides prepared by polycondensation of trimellitic anhydride, diphenyl methane diisocyanate and an isocyanate mixture are provided. These preparations exhibit low viscosity in high-solids solutions and are useful as wire enamels and topcoats over polyester and polyesterimide base coats.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: June 1, 1982
    Assignee: General Electric Company
    Inventor: Yue-guey L. Lee