Patents by Inventor Lucy T. Stevenson

Lucy T. Stevenson 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