Patents by Inventor Zhang Ran

Zhang Ran 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).

  • Oral care implement
    Patent number: D679504
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 9, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: David Lee, Liu Yu, Ding Xiang Ji, Ji Yan Mei, Zhang Ran, Xi Wen Jin