Patents by Inventor Yan Yan Rao

Yan Yan Rao 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).

  • Anti-balling drill bit positioned relative to fixed blades presenting fixed cutting inserts
    Patent number: 10072463
    Abstract: The disclosure relates to polycrystalline diamond compact (PDC) drill bits utilized for drilling wellbores.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 11, 2018
    Inventors: Yan Yan Rao, Xiao Jun Peng
  • Anti-balling Drill Bit
    Publication number: 20160123086
    Abstract: The disclosure relates to polycrystalline diamond compact (PDC) drill bits utilized for drilling wellbores.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 5, 2016
    Inventors: Yan Yan Rao, Xiao Jun Peng