Security card and security card blank
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 31, 1988
Grant Date -
N/A
app pub date -
Aug 13, 1986
filing date -
Aug 28, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A security card blank comprises a plurality of superposed layers (5,5',6,7,8,9) including a metallic layer (5,5'). The metallic layer comprises any radiation absorbent, metal, metalloid, or their alloys or derivatives, such as oxides or sulphides. The metallic layer (5,5') is positioned within the card blank and is imageable only under the influence of high intensity radiation to produce a security card. After imaging, at least part of the imaged metallic layer is detectable from outside the card.
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