知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

631 条记录 (耗时 0.025 秒)

    SECURE DOCUMENT AND METHOD FOR MANUFACTURING A SECURE DOCUMENT
    1.
    发明公开
    SECURE DOCUMENT AND METHOD FOR MANUFACTURING A SECURE DOCUMENT 审中-公开

    公开(公告)号：US20240336082A1

    公开(公告)日：2024-10-10

    申请号：US18624218

    申请日：2024-04-02

    申请人： IDEMIA FRANCE

    发明人： Marie MAZZOLINI ,  Coralie VANDROUX ,  Benoît BERTHE

    IPC分类号： B42D25/346 ,  B42D25/23 ,  B42D25/373 ,  B42D25/435 ,  B42D25/45 ,  G02B3/00

    CPC分类号： B42D25/346 ,  B42D25/373 ,  B42D25/435 ,  B42D25/45 ,  G02B3/005 ,  G02B3/0056 ,  B42D25/23

    摘要： The present invention relates to a secure document and to a method for manufacturing a secure document. The secure document comprises:



    a metal layer or metal oxide layer,
    a lenticular array comprising converging lenses positioned facing the metal layer or metal oxide layer,
    at least one transparent layer on which the metal layer or metal oxide layer is arranged such that said metal layer or metal oxide layer is interposed between the lenticular array and the transparent layer;
    wherein the metal layer or metal oxide layer comprises perforations formed by focusing a plurality of laser radiations through the lenticular array onto the metal layer or metal oxide layer, the plurality of laser radiations being directed at a plurality n of angles of incidence in order to form said perforations so as to reveal n personalized images when the secure document is observed at the n angles of incidence,
    said perforations being produced in contiguous or overlapping perforation areas so as to form visual continuity between the n personalized images when said document is tilted.

    MULTI-PLATING-LAYER OPTICAL ANTI-COUNTERFEITING ELEMENT AND MANUFACTURING METHOD THEREOF
    4.
    发明公开
    MULTI-PLATING-LAYER OPTICAL ANTI-COUNTERFEITING ELEMENT AND MANUFACTURING METHOD THEREOF 审中-公开

    公开(公告)号：US20240198712A1

    公开(公告)日：2024-06-20

    申请号：US17598181

    申请日：2020-03-27

    申请人： Zhongchao Special Security Technology Co., Ltd. ,  China Banknote Printing and Minting Corp.

    发明人： Chunhua HU ,  Weiwei ZHANG ,  Baoli ZHANG ,  Jun ZHU

    IPC分类号： B42D25/324 ,  B42D25/328 ,  B42D25/373 ,  B42D25/45 ,  G02B5/18

    CPC分类号： B42D25/324 ,  B42D25/328 ,  B42D25/373 ,  B42D25/45 ,  G02B5/1857

    摘要： An optical anti-counterfeit element includes an undulating structure layer (2); the undulating structure layer includes a first area (A) with a first microstructure and a second area (B) with a second microstructure; a structural parameter of the second microstructure is greater than a structural parameter of the first microstructure; the undulating structure layer also includes a third area (C) with a third microstructure; a structural parameter of the third microstructure is greater than the structural parameter of the second microstructure; a first plating layer (3) is arranged on the first area; a second plating layer (5) is arranged on the second area; the third area is not provided with a first plating layer or a second plating layer; and viewed from one side of the optical anti-counterfeit element, the first area has an optical feature of a combination of the first microstructure and the first plating layer, the second area has an optical feature of a combination of the second microstructure and the second plating layer, and the third area has hollow features. The optical anti-counterfeit element has excellent anti-counterfeit performance.

    Magnetic PUF with predetermined information layer
    6.
    发明授权
    Magnetic PUF with predetermined information layer 有权

    公开(公告)号：US11951759B2

    公开(公告)日：2024-04-09

    申请号：US17902779

    申请日：2022-09-02

    申请人： Lexmark International, Inc.

    发明人： Keith Bryan Hardin

    IPC分类号： B42D25/45 ,  B42D25/369 ,  B42D25/373 ,  G06K19/06 ,  G06K19/08

    CPC分类号： B42D25/369 ,  B42D25/373 ,  B42D25/45

    摘要： The invention adds a Physical Information Layer (“PIL”) to the magnetic particles within a matrix that creates an unclonable physical unclonable function “object.” The PIL assists in searching to find the combination that matches a pre-determined enrolled combination with additional information that includes a search index, which limits the range of data required to search in order to find a match in the enrolled database. The index could be a predetermined value that associates the random magnetic profile values to a list of enrolled values in a database. The additional information may include product or general information that needs to be easily communicated to a user of the PUF.

    Display having sub-wavelength polygonal periodic elements
    8.
    发明授权
    Display having sub-wavelength polygonal periodic elements 有权

    公开(公告)号：US11867933B2

    公开(公告)日：2024-01-09

    申请号：US16884464

    申请日：2020-05-27

    申请人： TOPPAN PRINTING CO., LTD.

    发明人： Hidemitsu Hakii ,  Masashi Kawashita ,  Yukari Oda ,  Tomoya Uchida

    IPC分类号： B42D25/373 ,  G02B1/18 ,  G02B5/28 ,  G02B5/00 ,  G02B5/30

    CPC分类号： G02B5/285 ,  G02B1/18 ,  G02B5/008 ,  G02B5/30 ,  B42D25/373

    摘要： A display is provided with a periodic structure that is dielectric and includes a support and a plurality of periodic elements. A plurality of periodic elements is arranged on a reference plane in a two-dimensional lattice form having a sub-wavelength period and are either convexities projected or concavities recessed in the reference plane. A metal layer is disposed on a surface of the periodic structure. The surface corresponds to a plane including a region of the reference plane surrounding the individual periodic elements and surfaces of the periodic elements. The metal layer's profile conforms to a surface profile of the periodic structure. The plurality of periodic elements have an interval therebetween in a first direction in which the plurality of periodic elements are arranged in a two-dimensional lattice form. The interval is different from an interval between the periodic elements in a second direction intersecting the first direction.

    SUBSTRATE FOR PRODUCING VALUE PAPERS OR SECURITY PAPERS
    10.
    发明公开
    SUBSTRATE FOR PRODUCING VALUE PAPERS OR SECURITY PAPERS 审中-公开

    公开(公告)号：US20230331020A1

    公开(公告)日：2023-10-19

    申请号：US18028970

    申请日：2021-09-28

    申请人： Hueck Folien Gesellschaft M.B.H.

    发明人： Anita Fuchsbauer ,  Martin Egginger

    IPC分类号： B42D25/333 ,  B42D25/373 ,  B42D25/378

    CPC分类号： B42D25/333 ,  B42D25/373 ,  B42D25/378 ,  B42D25/351

    摘要： A substrate for producing papers of value or security papers is described. The substrate may include a carrier layer, at least one security element applied at least one of onto and into the carrier layer, and a primer. The primer may be applied onto at least one of a first substrate side and a second substrate side of the substrate. The primer may be arranged, at least in some sections, between the carrier layer and the at least one security element. Additionally and/or alternatively, the primer may cover the at least one security element and/or the carrier layer such that regions of the at least one security element covered by the primer are not as well visible as regions of the at least one security element and/or the carrier layer not covered by the primer. The at least one security element may include a partial, reflective layer forming an image.