Patents by Inventor Isaac C. Sanchez

Isaac C. Sanchez 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).

  • Compatibilized blend comprising skin polymer, ethylene-vinyl alcohol copolymer, and poly-2-oxazoline
    Patent number: 5032434
    Abstract: A polymer blend comprises a skin polymer, an ethylene-vinyl alcohol copolymer and a poly-2-oxazoline. The polymer blend possesses good gas barrier properties and excellent mechanical strength. A particularly preferred blend comprises an improved reclaim layer of a six-layer composite sheet suitable for thermoforming into a food package.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: July 16, 1991
    Assignee: Aluminum Company of America
    Inventors: Isaac C. Sanchez, Willy M. Balaba, Lucy T. Stevenson
  • Polymer blend comprising polycarbonate, acrylonitrile-methylacrylate copolymer, and imide-acrylate copolymer
    Patent number: 5017411
    Abstract: A polymer blend comprising a polycarbonate, an acrylonitrile-methyl acrylate copolymer and an imide-acrylate copolymer containing acidic or anhydride groups which have been alkylated or esterified. The polymer blend has a low oxygen permeation rate, high strength, and is suitable for use as a packaging material.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 21, 1991
    Assignee: Aluminum Company of America
    Inventors: Charlotte H. Chen-Tsai, Isaac C. Sanchez, William L. Burton