Patents by Inventor Sandra K. Zawada

Sandra K. Zawada 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).

  • Lightweight, waterproof, insulating, cementitious compositions and methods for forming and using such compositions
    Patent number: 6083318
    Abstract: A lightweight, cementitious composition and method which includes a noncementitious filler, Portland cement, bentonite, diataomaceous earth and lime. The noncementitious filler may be sawdust, rubber chips, flyash or combinations of two or more of these ingredients. Once mixed with water and air, the composition can be molded to form a variety of structures, including electrically nonconductive posts, and can be used to absorb and contain liquid contaminants in a vessel.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 4, 2000
    Inventors: Joseph M. Zawada, Sandra K. Zawada
  • Lightweight, waterproof, insulating, cementitious compositions and methods for forming and using such compositions
    Patent number: 5852077
    Abstract: A lightweight, cementitious composition and method which includes a noncementitious filler, Portland cement, bentonite, diatamaceous earth and lime. The noncementitious filler may be sawdust, rubber chips, flyash or combinations of two or more of these ingredients. Once mixed with water and air, the composition can be molded to form a variety of structures, including electrically nonconductive posts, and can be used to absorb and contain liquid contaminants in a vessel.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: December 22, 1998
    Assignee: Composite Industries of America, Inc.
    Inventors: Joseph M. Zawada, Sandra K. Zawada