Patents by Inventor Sue-Lee Luo Chang

Sue-Lee Luo Chang 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).

  • Formation tester tool seal pad
    Patent number: 7584655
    Abstract: A formation tester tool includes a formation tester tool body having a surface, a formation probe assembly located within the formation tester tool body, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the surface of the formation tester tool body, the piston being slidingly retained within a chamber, and a seal pad located at an end of the piston, wherein the seal pad includes a first inner sealing element and a second outer sealing element.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: September 8, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Anthony H. van Zuilekom, Chi-Huang Michael Chang, Sue-Lee Luo Chang, legal representative, Arian Abbas, Bruce W. Mackay
  • FORMATION TESTER TOOL SEAL PAD
    Publication number: 20080295588
    Abstract: A formation tester tool includes a formation tester tool body having a surface, a formation probe assembly located within the formation tester tool body, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the surface of the formation tester tool body, the piston being slidingly retained within a chamber, and a seal pad located at an end of the piston, wherein the seal pad includes a first inner sealing element and a second outer sealing element.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Inventors: Anthony H. van Zuilekom, Chi-Huang Michael Chang, Sue-Lee Luo Chang, Arian Abbas, Bruce W. Mackay