MARKING ELEMENT
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United States of America Patent
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Issued Date -
Jul 21, 2022
app pub date -
Sep 30, 2020
filing date -
Oct 7, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A marking element that enables to suppress counterfeiting specific information by making specific information made by electronic watermark pattern hard to be read. The marking element includes: a marking formed in a base plate with background pattern having engraved recesses made by irradiating the base plate with a laser; an identifying mark formed with recesses made by overwrite-engraving the background pattern with the laser, the recesses being deeper than the recesses of the background pattern; and a hidden mark with recesses made by overwrite-engraving the part different from the part of the identifying mark in the background pattern with the laser, the recesses are formed to be deeper than the background pattern, wherein the hidden mark having different recognition form from the identifying mark.
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