Electronic article surveillance markers for optically recorded media
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 25, 2003
Grant Date -
Oct 3, 2002
app pub date -
Feb 26, 1999
filing date -
Feb 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic article surveillance marker is disclosed, including a signal producing layer and a signal blocking layer. The signal producing layer includes flux collection portions joined by magnetic switching sections each having a major axis A, and the signal blocking layer comprises signal blocking elements overlying each flux collection portion. The elements each have at least one boundary that overlies a magnetic switching section and preferably has a tangent T that is not perpendicular to the major axis A of that magnetic switching section. Methods of making the inventive marker are also disclosed.
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Cited Art Landscape
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