Patents Assigned to Chevon Chemical Company LLC
  • Injection method for feeding particulate to a process vessel
    Patent number: 6139226
    Abstract: An injection method for feeding a particulate material to a process vessel, including a valve with at least one cavity adapted for receipt of a predetermined volume of particulate and a sweep stream source for providing a sweep stream having flow in a direction generally toward the valve to remove substantially all of the particulate from the cavity of the valve.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Chevon Chemical Company LLC
    Inventors: Kevin W. Lawson, Gary K. Scott, Wendell H. Snelson