Patents by Inventor Kwei-Lin Chang

Kwei-Lin 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).

  • Device outer wall structure
    Patent number: 6153277
    Abstract: A device outer wall structure includes a rubber covering covered on a device for example a bicycle hand grip or saddle, the rubber covering having a plurality of hollow convex portions filled with air and a plurality of air passages in communication between the convex portions for guiding air from one convex portion to another when the convex portions bear an external pressure.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: November 28, 2000
    Inventor: Kwei-Lin Chang