Patents by Inventor Carol Ann Terry

Carol Ann Terry 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 devices and methods for determining halides in aqueous samples
    Patent number: 5229299
    Abstract: A test device and method of use for determination of aqueous halide ions is described. The device has a porous matrix containing a silver dichromate reagent that gives a colorimetric response in the presence of halide ions and a cationic substance that prevents the formation of silver oxide products. The cationic substance has no colorimetric response in the presence of halide ions that would interfere with the measurement of the colorimetric change of the silver dichromate reagent.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: July 20, 1993
    Assignee: Environmental Test Systems, Inc.
    Inventor: Carol Ann Terry