Patents Assigned to Dana E. Larson
  • Nonpolluting drilling fluid composition
    Patent number: 4374737
    Abstract: Disclosed is a nonpolluting drilling fluid composition. The composition mixture consisting essentially of a concentrate and any nonpolluting oil. The concentrate consists essentially of diethanolamide, a fatty acid, and a imidazoline/amide mixture.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: February 22, 1983
    Assignees: Dana E. Larson, Ronnie J. Mouton
    Inventors: Dana E. Larson, Ronnie J. Mouton, Chris J. Mocek