Patents Represented by Attorney, Agent or Law Firm Cortlan R. Schupbach Hsiang-ning Sun
  • Delayed coker unit furnace
    Patent number: 6187147
    Abstract: The return bend elbow fittings connecting adjacent tubes in a delayed coker furnace are improved by subjecting the interior surface of the fittings to a diffusion hardfacing process.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: February 13, 2001
    Assignee: Conoco Inc.
    Inventor: Brian J. Doerksen