Patents by Inventor Chong-Yi Chang

Chong-Yi Chang 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: D491295
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: June 8, 2004
    Assignee: TYC Brother Industrial Co., Ltd.
    Inventor: Chong-Yi Chang
  • Patent number: D493005
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: July 13, 2004
    Assignee: TYC Brother Industrial Co., Ltd.
    Inventor: Chong-Yi Chang