Patents by Inventor Ju Lin Yang

Ju Lin 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).

  • Doorknob
    Patent number: D506665
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: June 28, 2005
    Assignee: Tung Lung Metal Industry Co., Ltd.
    Inventors: Chia Min Sun, Ju Lin Yang