Patents by Inventor Chengchao Wu

Chengchao Wu 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).

  • Delta sander
    Patent number: D503599
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: April 5, 2005
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Chengchao Wu
  • Palm sander
    Patent number: D476543
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: July 1, 2003
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: ChengChao Wu
  • Base for miter saw
    Patent number: D490092
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: May 18, 2004
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Chengchao Wu
  • Miter saw
    Patent number: D490826
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: June 1, 2004
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Chengchao Wu