Patents by Inventor Wanchai Ratanasirigulchia

Wanchai Ratanasirigulchia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Shaped charge loading tube for perforating gun
    Patent number: 7159657
    Abstract: The loading tube comprises cups forming cup cavities for enclosing an explosive charge within each of the cups. The loading tube has ridges and valleys providing longitudinal and lateral strength to the loading tube. The loading tube is constructed of a formed material such as paper pulp, high-density polystyrene, plastic or sheet metal.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: January 9, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Wanchai Ratanasirigulchia, Wenbo Yang, Cynthia L. Hickson, Robert A. Parrott
  • Shaped Charge Loading Tube for Perforating Gun
    Publication number: 20050211467
    Abstract: The loading tube comprises cups forming cup cavities for enclosing an explosive charge within each of the cups. The loading tube has ridges and valleys providing longitudinal and lateral strength to the loading tube. The loading tube is constructed of a formed material such as paper pulp, high-density polystyrene, plastic or sheet metal.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 29, 2005
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wanchai Ratanasirigulchia, Wenbo Yang, Cynthia Hickson, Robert Parrott