Patents by Inventor Doris E. Cattran

Doris E. Cattran 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).

  • Quantification of the munitions, HMX, RDX, and TNT in waste water by liquid chromatography
    Patent number: 4252537
    Abstract: Disclosed is a liquid chromatography process for the quantitative determination of nitro-amines and nitro-aromatics in liquid samples, which comprises directly injecting a liquid sample containing these compounds onto a liquid chromatography column, separating the compounds on the column by elution, and then monitoring the ultra-violet absorbance of the resulting eluant. The instant process finds particular application in the quantitative detection of munitions, such as HMX, RDX, TNT, and their degradation products, in aqueous effluent streams.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: February 24, 1981
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Doris E. Cattran, Thomas B. Stanford, Anthony P. Graffeo