Patents by Inventor Liping Yang

Liping Yang 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).

  • Boot
    Patent number: D422778
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: April 18, 2000
    Assignee: ZM International
    Inventor: Liping Yang
  • Boot
    Patent number: D423197
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: April 25, 2000
    Assignee: ZM International
    Inventor: Liping Yang