Patents by Inventor Clifford A. Hui

Clifford A. Hui 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).

  • Mud walking shoe
    Patent number: 6729049
    Abstract: An apparatus for walking on mud includes a shoe body made of a rigid material that floats in water, the shoe body including a generally horizontal top surface having a substantially greater area than an area of a sole of a foot of a user, the shoe body including a bottom portion having a bottom surface with a generally convex contour; a fastener attached to the top surface for attaching the apparatus to a foot of a user; and pegs attached to the bottom surface, the pegs extending downwardly away from the bottom surface.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: May 4, 2004
    Assignee: The United States of America as represented by the Department of the Interior
    Inventor: Clifford A. Hui