Patents by Inventor Clarence S. Wentzel

Clarence S. Wentzel 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).

  • Chromatographic analysis of hydrocarbon mixtures
    Patent number: 4384471
    Abstract: The paraffin, olefin and aromatic compounds in a gasoline containing hydrocarbons up to about C.sub.13 can be analyzed and identified by gas liquid chromatography. The aromatics are reversibly absorbed from the gasoline sample by N,N-bis(2-cyanoethyl) formamide while the olefins are irreversibly absorbed by sulfuric acid. Following separation by compound type, each group is resolved and identified by gas liquid chromatography.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: May 24, 1983
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventor: Clarence S. Wentzel