Patents by Inventor John Paul Chan

John Paul Chan 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).

  • Machine readable binary codes
    Patent number: 5825015
    Abstract: A machine readable binary code includes a two-dimensional matrix of data cells (6) having a plurality of sides. A unique sub-array of data cells (1, 2, 3, 4) is positioned at the point of intersection of each pair of adjacent sides to define and uniquely identify each corner of the matrix.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: October 20, 1998
    Assignee: Electronic Automation Limited
    Inventor: John Paul Chan