Patents by Inventor Kai Nin So

Kai Nin So 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: 5839736
    Abstract: An in-line skate construction includes a soft shoe element that replaces a conventional molded boot type having a foot enclosure. The shoe element is fixed in position using a pair of screws which penetrate the sole of the shoe element, a foot frame element and a chassis element to engage corresponding nuts, thereby enabling the shoe element to be manually attached to the chassis element and removed for washing, replacement, and separate wearing by the user. The heads of the screws are recessed in shaped washers positioned within the shoe element so as to avoid projections under the foot and heel of the wearer. The shoe element is of standard height and is independent of an ankle cuff, so that it may be open at the upper portion thereof for improved air circulation.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: November 24, 1998
    Assignee: Marco Skates Limited
    Inventors: Shin Khoo Chiu, Kai Nin So