Patents by Inventor Barry R. Loescher

Barry R. Loescher 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).

  • Test for glycol in water
    Patent number: 5496739
    Abstract: Disclosed is a method of determining the presence of glycol in an aqueous solution comprising providing a container containing a mixture of potassium dichromate, a catalyst comprised of mercuric sulfate and silver sulfate, the mixture provided in an acidic solution. To the container is added a controlled volume of aqueous solution containing glycol. The mixture is permitted a time sufficient to change color, the time not being in excess of 15 minutes. The color is compared to a set of color standards to determine the presence of glycol in said aqueous solution.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: March 5, 1996
    Assignee: Zenon Airport Environmental Inc.
    Inventors: Barry R. Loescher, David M. Newman, Rodney D. Thomson