Patents by Inventor Adrian M. Vessey

Adrian M. Vessey 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).

  • Method of detecting the initial concentration of a water-treatment chemical in a diluted aqueous system
    Patent number: 5166074
    Abstract: A method of detecting the initial concentration of a water-treatment chemical present in a diluted aqueous system, by (1) incorporating into the aqueous system, a mixture including a known amount of the active ingredient and a known amount of an ultra-violet sensitive compound having the formula (I): ##STR1## wherein halogen is chlorine or bromine; X is ##STR2## and a and b, independently are 0 or 1; M is hydrogen or an alkaline metal ion; and (2) detecting the concentration of the compound of formula I, by exposing to ultra-violet light a sample of the aqueous system so treated.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: November 24, 1992
    Inventors: Adrian M. Vessey, David S. Ryder