Patents by Inventor Zongjie Ma

Zongjie Ma 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).

  • Electrical dental calculus remover
    Patent number: D855182
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: July 30, 2019
    Assignee: SHENZHEN JIENUOYI SCIENCE AND TECHNOLOGY CO., LTD
    Inventor: Zongjie Ma
  • UVC LED sterilizer
    Patent number: D868992
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 3, 2019
    Inventor: Zongjie Ma
  • Electrical dental calculus remover
    Patent number: D884893
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 19, 2020
    Inventor: Zongjie Ma