Patents by Inventor Paul Chinling Chang

Paul Chinling 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).

  • Defect discrimination apparatus, methods, and systems
    Patent number: 10288583
    Abstract: An apparatus and a system, as well as methods, operable to include acquiring eddy current data from at least two concentric pipes, determining spatial frequency content of the eddy current data, and determining locations of defects in each of the pipes based on the spatial frequency content.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 14, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul Chinling Chang, Luis Emilio San Martin, Reza Khalaj Amineh, Aixa Maria Rivera-Rios
  • DEFECT DISCRIMINATION APPARATUS, METHODS, AND SYSTEMS
    Publication number: 20170261469
    Abstract: In some embodiments, an apparatus and a system, as well as methods, may operate to include acquiring eddy current data from at least two concentric pipes. Further activity may include determining spatial frequency content of the eddy current data, and determining locations of defects in each of the pipes based on the spatial frequency content. Additional methods, apparatus, and systems are disclosed.
    Type: Application
    Filed: November 10, 2015
    Publication date: September 14, 2017
    Inventors: Paul Chinling Chang, Luis Emilio San Martin, Reza Khalaj Amineh, Aixa Maria Rivera-Rios