Graphene layers for identification of products
    4.
    发明授权
    Graphene layers for identification of products 有权
    石墨烯层用于识别产品

    公开(公告)号:US09493025B2

    公开(公告)日:2016-11-15

    申请号:US14599637

    申请日:2015-01-19

    摘要: Aspects of the present disclosure relate to a security device, in particular, a multilayered security device. The multilayered security device includes a substrate layer having a first substrate. The substrate layer attaches to the product. The multilayered security device also includes a graphene layer. The graphene layer has a first continuous graphene sheet that is made of a monolayer of covalently-bonded carbon atoms. The graphene layer also forms, in response to exposure to a verification stimulus, a contrasting pattern with respect to an exposed substrate area from the substrate layer.

    摘要翻译: 本公开的方面涉及安全装置,特别是多层安全装置。 多层安全装置包括具有第一基板的基板层。 基底层附着在产品上。 多层安全装置还包括石墨烯层。 石墨烯层具有由单层共价键合的碳原子制成的第一连续石墨烯片。 石墨烯层还响应于暴露于验证刺激而形成相对于从衬底层暴露的衬底区域的对比图案。

    Transaction card having features for easy removal from wallet

    公开(公告)号:US10363769B1

    公开(公告)日:2019-07-30

    申请号:US15926456

    申请日:2018-03-20

    摘要: A transaction card includes a first full thickness portion and a second, reduced thickness portion. Each of the first and second portions includes a top surface and an opposing bottom surface spaced from the top surface by a thickness of the card. The first, full thickness portion includes an extent of the card that remains exposed when the card is inserted into a pocket of a card-carrying case, and a feature deviating from a flat region along at least one of the top surface and the opposing bottom surface of the card. The feature is configured for tactile engagement to facilitate removal of the card from the pocket.