Patents by Inventor Ko-Jan Tsai

Ko-Jan Tsai 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).

  • Bicycle wheel rims
    Patent number: 6767070
    Abstract: A bicycle wheel rim includes a plurality of connectors each having a spoke engaging hole for connecting with a spoke, and two protrusions extend from two ends of each connector. A plurality of holes are defined through each protrusion and a plurality of loops extend through the holes of the connectors which are arranged as a circle. Each protrusion has a recess defined in an inside thereof so as to be engaged with a tire. The loops and the connectors are made by carbon fiber or compound material.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: July 27, 2004
    Assignee: Tien Hsin Industries Co., Ltd.
    Inventors: Cheng-Hsun Chiang, Ko-Jan Tsai