Patents by Inventor Claude L. Warner

Claude L. Warner 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).

  • Acid indicators
    Patent number: 5650329
    Abstract: Safety apparel for use in harardous environments has an indicating material incorporated in the surface of the apparel. On exposure to hazardous materials, such as acids and bases, the surface changes color to indicate exposure and provide a warning. Further, a material and method is provided to treat surfaces to indicate exposure to hazardous materials. The treated surfaces may exhibit reversibility effective to indicate exposure over repetitive cycles.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 22, 1997
    Assignee: AWC. Inc.
    Inventor: Claude L. Warner