Patents by Inventor Hsu Tzu-Shun

Hsu Tzu-Shun 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).

  • Key ring assembly
    Publication number: 20080087063
    Abstract: A key ring assembly includes a flexible wire whose two ends removably extend through a passage of a retainer and can be snapped to each other. One of the two ends of the flexible wire can be easily removed from the passage so as to extend through the keys and then re-inserted through the passage and connected to the other end of the flexible wire.
    Type: Application
    Filed: June 4, 2007
    Publication date: April 17, 2008
    Inventor: Hsu Tzu-Shun