Patents by Inventor Keith Wen

Keith Wen 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).

  • Patent number: 5853844
    Abstract: A rubber pad construction is adapted for use in making a shoe sole, a shoe pad, a face layer of a table-tennis paddle, a shell of a ball, etc. The rubber pad construction includes a substrate, and a plurality of first and second protrusions which extend outwardly from one side of the substrate at intervals. The first protrusions are thinner and higher than the second protrusions to provide more flexibility. The second protrusions have more bearing ability than the first protrusions. The rubber pad construction provides desirable shock-absorbing and rebounding qualities.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: December 29, 1998
    Inventor: Keith Wen