Patents by Inventor Chris D. Cheng

Chris D. Cheng 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 Cutter with Alignment Structure for Drill Bit and Assembly Method Thereof
    Publication number: 20210180409
    Abstract: Disclosed is a drill bit for cutting formation comprises a bit body, a plurality of cutters, a plurality of blades with pockets to accommodate the cutters respectively. Each of the plurality of cutters has at least one alignment structure to align with at least one counter-alignment structure on each of the pockets to locate the rotary orientation between each of the plurality of cutters and each of the corresponding pockets.
    Type: Application
    Filed: December 11, 2020
    Publication date: June 17, 2021
    Applicant: CNPC USA Corporation
    Inventors: Javier Davila, Chris D. Cheng