公开(公告)号：WO2023086506A2

公开(公告)日：2023-05-19

申请号：PCT/US2022/049597

申请日：2022-11-10

Applicant: BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY AND AGRICULTURAL AND MECHANICAL COLLEGE ,  LOUISIANA TECH RESEARCH CORPORATION ,  BUTLER, Leslie G. ,  MAASBERG, Michele L. ,  HARTMAN, Charles ,  TAYLOR, Ian

Inventor： BUTLER, Leslie G. ,  MAASBERG, Michele L. ,  HARTMAN, Charles ,  TAYLOR, Ian

IPC: B41M3/14 ,  B42D25/30 ,  B33Y10/00 ,  C09D11/037

Abstract: A method and apparatus for differentiating between authentic and counterfeit item, and legacy additive manufactured (AM) components securely throughout the lifecycle using grating interferometry, blockchain, and smart contracts. The method includes fabrication of a trust anchor by laser power modulation to selectively create porosity which can encode digital information within the component using programmable invisible ink (PGII). X-ray interferometry reads out the digital information as well as texture unique to the component. A quick response (QR) code is implemented with other anti-counterfeiting features to increase efficiency. A smart contract between X-ray interferometry radiography instruments and a blockchain database establishes item provenance. The characteristics of PGII are compatible with additive manufacturing, as well as other manufacturing processes such as injection molding and casting. The method and apparatus have minimal impact on the component fabrication, detects counterfeiting and sabotage, and is conformal to existing item identification standards.

公开(公告)号：WO2023039167A1

公开(公告)日：2023-03-16

申请号：PCT/US2022/043062

申请日：2022-09-09

Applicant: META MATERIALS INC.

Inventor： KHOSHNEGAR SHAHRESTANI, Milad ,  LANDROCK, Clinton K. ,  NAHVI, Ehsan

IPC: G02B5/20 ,  B42D25/00 ,  B42D25/30 ,  G07D7/004 ,  G07D7/12

Abstract: Optical security features having pixels with faceted microstructures supporting nano-patterned optical filters are disclosed.

公开(公告)号：WO2023274227A1

公开(公告)日：2023-01-05

申请号：PCT/CN2022/101885

申请日：2022-06-28

Applicant: SAINT-GOBAIN GLASS FRANCE ,  ZHENG, Yuan

Inventor： NGHIEM, Bernard

IPC: B05D5/00 ,  B42D25/30 ,  G09F3/00

Abstract: It is providing a product component (100) having a microstructure part (1011), a method of obtaining information therefrom, an identification device and a processing method. The product component (100) comprises: at least one microstructure part (1011) formed on a surface of a predetermined region (101) of the product component (100) and comprising at least one type of microstructure, wherein the microstructure is configured to have a binding capacity with a predetermined liquid different from other parts (1012) of the predetermined region (101) except for the microstructure part (1011), so that a form of the predetermined liquid present on the microstructure part (1011) is different from a form of the predetermined liquid present on the other part (1012)s at least during a predetermined time period.

公开(公告)号：WO2022240387A1

公开(公告)日：2022-11-17

申请号：PCT/US2021/031526

申请日：2021-05-10

Applicant: NU PAGAMENTOS S.A. ,  LEGGE, Amanda Harrington

Inventor： DI PIETRO AUGUSTO COSTA, Maria Eduarda ,  BURIN, Thais Teixeira ,  PETTINATI, Lucas Visvikis ,  JUNQUEIRA, Cristina Helena ,  MORGANTI, Ariane Maria

IPC: B42D15/00 ,  G06K9/00 ,  B42D25/00 ,  B42D25/30 ,  B42D25/23

Abstract: A payment card includes hidden features (e.g., textual messages, graphics, emphasis features associated with conspicuous features of the payment card, or the like) undiscernible under only visible light, but discernable under ultraviolet light. The hidden features can be incorporated into multiple layers of a side of the payment card and can be present at different transparencies. A container (e.g., presentation box) can include a circuit to detect when the container is opened and cause the hidden features to be illuminated with ultraviolet light. The ultraviolet light source can be incorporated into the container itself, or can be incorporated into the payment card (e.g., activated by supplying a signal to the payment card from the container).

公开(公告)号：WO2022238468A1

公开(公告)日：2022-11-17

申请号：PCT/EP2022/062753

申请日：2022-05-11

Applicant: BASF SE

Inventor： GRIGORENKO, Nikolay A ,  OSWALD, Andre ,  LEYBACH, Holger ,  KNISCHKA, Ralf ,  GERNANDT, Andreas

IPC: C09D7/40 ,  C09D7/61 ,  B42D25/425 ,  B42D25/378 ,  B42D25/36 ,  B42D25/30 ,  C08F222/00 ,  C08F222/10 ,  C08F287/00 ,  C08F292/00 ,  C08F293/00 ,  C08K3/08 ,  C08L53/00 ,  C09D5/00 ,  C09D151/10 ,  C09D153/00 ,  B42D25/324 ,  B42D25/328 ,  B42D25/364 ,  B42D25/351 ,  C08F220/10 ,  C08F220/56 ,  C08F222/102 ,  C08F293/005 ,  C08K2003/0806 ,  C08K2003/0831 ,  C08K2003/085 ,  C09D4/00 ,  C09D7/68 ,  C09D7/70

Abstract: The present invention relates to compositions, comprising (A) platelet-shaped transition metal particles, wherein the number mean diameter of the platelet-shaped transition metal particles, present in the composition, is in the range of from 15 nm to 1000 nm, the transition metal is selected from silver, copper, gold and palladium, especially silver and copper, very especially silver; (B) one, or more reactive diluents (B); (C) one, or more oligomers (C); (D) one, or more photonitiators (D); (E) at least a surfactant (E), which is a block copolymer, comprising at least a block A and a block B, wherein a) the block A comprises a1) monomer units (A1) derived from a compound selected from alkyl (meth)acrylates, alkyl (meth)acrylamides, or any mixture thereof, and a2) monomer units (A2) derived from a hydroxy group, or ether group containing alkyl (meth)acrylate; b) the block B comprises monomer units (B) derived from a compound selected from fluorinated (meth)acrylic esters of formula H2C=CR46(C(O)ORF-1) (XX), wherein R46 is H, or a methyl group; and RF-1 is an organic residue containing a perfluorinated alkyl group; (F) optionally one, or more polymeric binders; (F) optionally one, or more solvents; and (H) optionally further additives. The coatings, obtained with said compositions, show one color, when observed in transmission and another color, when observed in reflection on both sides of the cured coating.

公开(公告)号：WO2022227741A1

公开(公告)日：2022-11-03

申请号：PCT/CN2022/073790

申请日：2022-01-25

Applicant: 中钞特种防伪科技有限公司 ,  中国印钞造币总公司

Inventor： 孙凯 ,  朱军

IPC: B42D25/30

Abstract: 本申请提供一种光学防伪元件及其设计方法、防伪产品。光学防伪元件具有大致平顺的漫反射性曲面，入射光被漫反射性曲面反射后可在不小于预设观察角度集合Ωv的范围内形成大致均匀的亮度分布；漫反射性曲面包括被修饰的曲面区域和未被修饰的曲面区域，被修饰的曲面区域和未被修饰的曲面区域具有不同的反射特性，其中，被修饰的曲面区域与动画帧的图案区域相对应；在漫反射性曲面被入射光照射时，被修饰的曲面区域共同呈现为动感特征的图案，未被修饰的曲面区域共同呈现为动感特征的背景。其制造工艺简单且可灵活实现颜色和/或明暗对比等的动感特征。

公开(公告)号：WO2022152978A2

公开(公告)日：2022-07-21

申请号：PCT/FR2021/000153

申请日：2021-12-24

Applicant: IMPRIMERIE NATIONALE

Inventor： MICHAU, Pascal Daniel

IPC: G06K19/077 ,  B42D25/00 ,  B42D25/30 ,  B42D25/351 ,  B42D25/23 ,  B42D25/305 ,  B42D25/455 ,  B42D25/46 ,  G06K19/07722 ,  G06K19/07728 ,  G06K19/08

Abstract: L'invention concerne un document de sécurité, comportant un coupon (30) sous forme de complexe multicouche présentant principalement une zone opaque et entouré par un cadre transparent (4), caractérisé en ce que le coupon (30) comporte une découpe (21 ) dans au moins l'un de ses coins et en ce que le cadre transparent (4) comporte au niveau de cette découpe (21 ) une zone de renflement (22) complémentaire de ladite découpe (21 ), et la ligne de frontière (23) entre ladite découpe (21 ) et ledit renflement (22) ayant une forme incurvée dissymétrique par rapport à la bissectrice (B) de l'angle du coin correspondant au renflement (22) du cadre transparent (4).

公开(公告)号：WO2022011746A1

公开(公告)日：2022-01-20

申请号：PCT/CN2020/105230

申请日：2020-07-28

Applicant: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITED

Inventor： BEN AZIZA, Zeineb ,  WANG, Xiaohan ,  HAO, Ting ,  ZHU, Xiuling ,  CHAN, Kenny

IPC: B42D25/351 ,  B42D25/328 ,  B42D25/30 ,  B42D25/435 ,  G03H1/28 ,  G03H1/02 ,  G02B5/18 ,  B42D25/29 ,  B42D25/333 ,  G02B5/1842 ,  G02B5/32 ,  G02B6/10

Abstract: A multilayered optical security device (100) has a resonant waveguide grating (RWG) layer (110) on an under layer (120) having a hologram. The RWG layer (110) has plural RWGs (601-625) for generating one or more patterns. Each RWG (601-625) has the first and second RWG portions (301, 302), with diffraction gratings (320, 330) of different grating periods, for light coupling-in and coupling-out, respectively. Using the RWGs (601-625) minimizes interference to a holographic image generated by the under layer (120). This advantage is especially useful when the holographic image carries digital data such as in digital holographic encryption where an encrypted hologram is used in the under layer (120). The digital data may contain biometric information such as a fingerprint. In each RWG portion (301, 302) of an individual RWG (601-625), scattering elements (321, 331) in a grating (320, 330) are curved to thereby enhance an angular tolerance in azimuthal angle during observing the patterns by an observer while the individual RWG (601-625) is still selective in elevation angle.

公开(公告)号：WO2021219852A1

公开(公告)日：2021-11-04

申请号：PCT/EP2021/061416

申请日：2021-04-30

Applicant: SURYS

Inventor： PIC, Marc ,  OUDDAN, Mohammed, Amine

IPC: G06K7/14 ,  B42D25/30 ,  G06T7/40 ,  G06T7/60 ,  G06Q30/00 ,  G06K9/00

Abstract: L'invention concerne un procédé de traitement d'une image de référence d'un code-barre de référence présentant des défauts aléatoires d'impression, le procédé comprenant des étapes consistant à : - enregistrer dans une mémoire une image de référence en niveaux de gris du code-barre de référence, - enregistrer un identifiant (UID) du code-barre de référence sous forme d'index dans une base de données. Il est essentiellement caractérisé en ce qu'il comprend en outre des étapes consistant à : - calculer une empreinte de référence dudit code-barre de référence, l'empreinte étant fonction des défauts aléatoires d'impression, et - enregistrer l'empreinte de référence dans la base de données.

公开(公告)号：WO2021127241A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/065701

申请日：2020-12-17

Applicant: CRANE & CO., INC.

Inventor： CAPE, Samuel M. ,  GOSNELL, Jonathan D. ,  BLEIMAN, Benjamin E. ,  COTE, Paul F.

IPC: B41M3/14 ,  B42D25/30

Abstract: A micro-optic security device (105) includes a planar array of microlenses (305), which are configured to focus light along a plurality of focal paths (610) associated with a viewing angle. The micro-optic security device further includes an icon layer stack (905) disposed along the plurality of focal paths. The icon layer stack includes a first icon layer (620) with volumes of cured material of a first color (613b) and volumes of substantially transparent material at locations outside of focal paths of the first range of viewing angles. The icon layer stack also includes a second icon layer (640) with volumes of substantially transparent cured material at locations along focal paths of the first range of viewing angles, and volumes of cured material of a second color (637a) at locations along focal paths of a second range of viewing angles.