Patents Assigned to Knogo North America Inc.
  • Theft resistant circuit assembly
    Patent number: 5847650
    Abstract: Printed circuit boards and integrated circuit assemblies have security markers formed thereon by deposition techniques or affixed thereto, either directly or by prior encasement of the markers in a resin prior to such affixation.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: December 8, 1998
    Assignee: Knogo North America Inc.
    Inventors: Peter Y. Zhou, Thomas A. Nicolette, Edward J. Callaghan, Paul F. McNamara
  • Method and apparatus for automatically desensitizing sensor elements of protected articles
    Patent number: 5500640
    Abstract: A desensitizer apparatus for desensitizing a security sensor element in a book spine. The apparatus includes a scanner which scans along a surface against which book spines are positioned and which detects sensor elements in the spines to be sure that only one book is positioned against the surface. If only one sensor element is detected, a signal is generated which operates a drive mechanism to move desensitizer magnets close to the surface to deactivate the sensor element in the book.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: March 19, 1996
    Assignee: Knogo North America Inc.
    Inventors: Peter Y. Zhou, Christopher R. Paul, Dexing Pang