Patents by Inventor QiGuang Li

QiGuang Li 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: D590533
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: April 14, 2009
    Assignee: Zhongshan Voice Technology Limited
    Inventor: QiGuang Li