Patents Represented by Attorney John Casperson

Find this attorney in the Justia Lawyer Directory

  • Analyzing marker dyes in liquid hydrocarbon fuels
    Patent number: 4918020
    Abstract: A method for analyzing marker dye present in the parts per million range in gasoline is provided using a solid-phase extraction technique with formation of the colored complex in the extraction column as well as a method for detecting the adulteration of gasoline containing the marker.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Atlantic Richfield Company
    Inventor: Anthony V. Nowak