Patents by Inventor Cheng-Jin Chen

Cheng-Jin Chen 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).

  • Weight-adjustable golf club head provided with rear lightweight covering
    Publication number: 20080070721
    Abstract: A weight-adjustable golf club head includes a rear lightweight covering and a golf club head body combined therewith. The rear lightweight covering has a rear crown portion and a rear wall portion extended therefrom. The golf club head body is combined with the rear lightweight covering which is designed to have a striking face, a front crown portion and a sole portion. The rear lightweight covering is made from a low specific gravity metal, and is designed to have a thickness less than 0.6 mm. The rear lightweight covering has an inner surface formed with a plurality of reinforcing ribs.
    Type: Application
    Filed: September 20, 2006
    Publication date: March 20, 2008
    Inventors: Cheng-Jin Chen, Chiu-Hong Tsai