Patents Assigned to Dalphian Corporation
  • Sulfide monitoring system and method
    Patent number: 4154659
    Abstract: Methods and apparatus relating to systems for determination of sulfide species and hydrogen sulfide hazard potential of well drilling mud.
    Type: Grant
    Filed: August 30, 1977
    Date of Patent: May 15, 1979
    Assignee: Dalphian Corporation
    Inventor: Mark S. Zetter