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    Label with graphene layer and system for authentication of label
    5.
    发明授权
    Label with graphene layer and system for authentication of label 有权

    公开(公告)号：US10002317B1

    公开(公告)日：2018-06-19

    申请号：US15483414

    申请日：2017-04-10

    申请人： Brady Worldwide, Inc.

    发明人： J. Michael Nauman

    IPC分类号： G06K19/06 ,  G06K19/067

    CPC分类号： G07D7/003 ,  G07D7/023

    摘要： A label adapted to be attached to an item and a system for validating a label are provided. The label contains an identifying portion of a circuit path extending between at least a pair of contact points in which the identifying portion of the circuit path includes a segment containing graphene. The system can include this label and a validating device. The validating device includes a testing portion of the circuit path adapted to contact the at least the pair of contact points of the identifying portion of the circuit path in the label to thereby complete the circuit path. The testing portion of the validation device is configured to internally process and validate the label in the validating device.

    Nano-stamp and matched reader for anti-counterfeiting applications
    7.
    发明授权
    Nano-stamp and matched reader for anti-counterfeiting applications 有权

    公开(公告)号：US09996843B2

    公开(公告)日：2018-06-12

    申请号：US14571259

    申请日：2014-12-15

    申请人： COLORADO STATE UNIVERSITY RESEARCH FOUNDATION ,  XUV LASERS, INC.

    发明人： Mario C. Marconi ,  Carmen S. Menoni ,  Jorge J. Rocca

    IPC分类号： G06Q30/00 ,  B42D25/00 ,  G07D7/00 ,  B42D25/29 ,  B42D25/328

    CPC分类号： G06Q30/0185 ,  B42D25/29 ,  B42D25/328 ,  B42D25/41 ,  G07D7/003 ,  G07D7/12

    摘要： A method and system for reading a security seal having a unique far-field pattern are described. Periodic nano-structure is generated on the surface of a substrate having spacings of hundreds of nanometers, or smaller, and affixed on a product, or generated directly onto the product. A laser beam having a wavelength longer than the periodic spacings directed onto at least a portion of the surface of the substrate at a chosen angle of incidence and a selected azimuthal angle relative to a chosen direction produces a unique far-field pattern that may be imaged by a digital image detector disposed at a chosen distance from the illuminated region, compared with a stored reference, and validated. The nanoscale sub-wavelength patterns can be printed using extreme ultraviolet light and read with readily available visible or ultraviolet light. The security seal contains a pattern that is invisible to the eye and to an optical microscope. Brand protection at different stages of the life-span of a product, from production to purchase is therefore available.