Information bearing article with tamper resistant scratch-off opaque coating
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 23, 1988
Grant Date -
N/A
app pub date -
Aug 5, 1986
filing date -
Aug 5, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An indicia bearing article, such as a lottery ticket, contest form or other document, for example, is provided. The article includes an indicia bearing sheet and an opaque coating thereover for hiding the indicia. The opaque coating contains metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in the opaque coating and hidden beneath the metal particles, for providing visual evidence of exposure to the solvent.
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Cited Art Landscape
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