Semiconductor package security features using...

Semiconductor device manufacturing: process – Making device or circuit responsive to nonelectrical signal – Responsive to electromagnetic radiation

Reexamination Certificate

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Details

C359S288000, C345S106000, C430S010000

Reexamination Certificate

active

11363962

ABSTRACT:
Numerous embodiments of an apparatus and method for generating an identification feature are described. In one embodiment of the present invention, portions of an identification character printed with thermochromatic ink are distributed within a three-dimensional matrix of a multi-layer patch. The multi-layer patch may be disposed above a substrate.

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