Patents by Inventor Alwyn Jakobus Hoffman

Alwyn Jakobus Hoffman 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).

  • OPTICAL DISC COMPRISING RF TRANSPONDER
    Publication number: 20090052309
    Abstract: An optical disc having a center, an outer periphery and a metal layer between the center and the outer periphery. A tag comprising a radio frequency transponder is located in a region adjacent the outer periphery. This arrangement facilitates reading the transponder with an external reader when a plurality of discs are stacked one on top of the other.
    Type: Application
    Filed: August 26, 2005
    Publication date: February 26, 2009
    Applicant: IP AND INNOVATION COMPANY HOLDINGS (PTY) LIMITED
    Inventor: Alwyn Jakobus Hoffman