Patents by Inventor Ray A. Damanczuk

Ray A. Damanczuk 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).

  • Schiff test for rapid detection of low levels of aldehydes
    Patent number: 4753891
    Abstract: An improved Schiff's reagent for detection of aldehydes (such as formaldehyde and gluteraldehyde) contains a para-rosaniline compound (such as para-rosaniline hydrochloride), orthophosphoric acid, a bisulfite compound (such as sodium metabisulfite), a phosphate compound (such as sodium orthophosphate monobasic), and water. This reagent provides lower detection levels and faster results than the reagents of the prior art, and is particularly useful in testing the rinse solutions of reusable medical equipment (such as hemodialysis equipment).
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: June 28, 1988
    Assignee: Akzo N.V.
    Inventors: Ralph P. Thompson, Ray A. Damanczuk