Patents by Inventor Pianpian Cheng

Pianpian 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).

  • Patent number: D908816
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: January 26, 2021
    Inventors: Pianpian Cheng, Chao Qiu
  • Patent number: D911868
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: March 2, 2021
    Inventor: Pianpian Cheng
  • Patent number: D920836
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: June 1, 2021
    Inventor: Pianpian Cheng
  • Patent number: D938855
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: December 21, 2021
    Inventor: Pianpian Cheng
  • Patent number: D979697
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: February 28, 2023
    Inventor: Pianpian Cheng
  • Patent number: D988122
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: June 6, 2023
    Inventor: Pianpian Cheng