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    Method and system for detecting and authenticating a taggant in a marking via surface-enhanced Raman spectroscopy
    1.
    发明授权
    Method and system for detecting and authenticating a taggant in a marking via surface-enhanced Raman spectroscopy 有权

    公开(公告)号：US12228519B2

    公开(公告)日：2025-02-18

    申请号：US18016627

    申请日：2021-07-13

    Applicant: SICPA HOLDING SA

    Inventor： Aldric Molina ,  James Brewster

    IPC: G01N21/65

    Abstract: The invention relates to a method, and a corresponding system, capable of checking whether genuine SERS or SERRS taggants having a unique characteristic surface enhancement scattering feature are present or not on a machine-readable marking applied on a value document by using a Raman spectrometer adapted to perform a Raman Spectroscopy analysis of the marking. The method according to the invention allows a reliable and fast detection of a presence of the SERS/SERRS taggants, and is particularly suitable for checking authenticity of value documents, e.g. such as banknotes, moving with respect to the Raman spectrometer with a given speed, and possibly with a high speed, or briefly exposed to the Raman spectrometer.

    METHODS FOR PRODUCING SECURITY FEATURES EXHIBITING ONE OR MORE INDICIA
    3.
    发明公开
    METHODS FOR PRODUCING SECURITY FEATURES EXHIBITING ONE OR MORE INDICIA 审中-公开

    公开(公告)号：US20240351361A1

    公开(公告)日：2024-10-24

    申请号：US18685142

    申请日：2022-08-18

    Applicant: SICPA HOLDING SA

    Inventor： Hervé PITTET ,  Patrick VEYA ,  Thibaut MARTINI ,  Riccardo RUGGERONE

    IPC: B42D25/387 ,  B42D25/29 ,  B42D25/373 ,  C09D11/101 ,  C09D11/322

    CPC classification number: B42D25/387 ,  B42D25/29 ,  B42D25/373 ,  C09D11/101 ,  C09D11/322

    Abstract: The present invention relates to the field of methods for producing eye-catching overt security features exhibiting one or more indicia as anti-counterfeit means on security documents or security articles as well as decorative purposes. In particular, the present invention provides methods for producing security features that can be easily, directly and unambiguously authenticated by the human without any external device or tool, wherein said security features comprised a cured UV-Vis radiation cationically or hybrid curable coating composition and cured one or more indicia, said composition comprising an ink vehicle and pigments comprising a flake-shaped non-metallic or metallic substrate comprising one or more at least partial coating layers, an at least partial surface treatment layer made of one or more surface modifiers based on perfluoropolyethers.

    CATIONIC UV-LED RADIATION CURABLE PROTECTIVE VARNISHES FOR SECURITY DOCUMENTS
    6.
    发明公开
    CATIONIC UV-LED RADIATION CURABLE PROTECTIVE VARNISHES FOR SECURITY DOCUMENTS 审中-公开

    公开(公告)号：US20240209223A1

    公开(公告)日：2024-06-27

    申请号：US18553695

    申请日：2022-03-29

    Applicant: SICPA HOLDING SA

    Inventor： Jean GARNIER ,  Patrick VEYA ,  Pierre-Yves HOFSTETTER

    IPC: C09D11/101 ,  B41M3/14 ,  B41M7/00 ,  B42D25/36 ,  C09D11/102 ,  C09D11/38

    CPC classification number: C09D11/101 ,  B41M3/14 ,  B41M7/0045 ,  B42D25/36 ,  C09D11/102 ,  C09D11/38

    Abstract: The present invention relates to the technical field of varnishes for protecting security documents, such as banknotes, against premature detrimental influence of soil and/or moisture upon use and time. In particular, the present invention provides a cationic UV-LED radiation curable protective varnish comprising:



    a) from about 65 wt-% to about 90 wt-% of either a cycloaliphatic epoxide, or a mixture of a cycloaliphatic epoxide and one or more cationically curable monomers other than the cycloaliphatic epoxide;
    b) from about 1 wt-% to about 10 wt-% of a diaryl iodonium salt;
    c) from about 0.01 wt-% to about 5 wt-% of a non-ionic surfactant; and
    d) a photosensitizer of general formula (I)








    wherein the weight percents are based on the total weight of the cationic UV-LED curable protective varnish, and a process for coating a security document with said cationic UV-LED radiation curable protective varnish.

    Process for producing optical effect layers
    10.
    发明授权
    Process for producing optical effect layers 有权

    公开(公告)号：US11618053B2

    公开(公告)日：2023-04-04

    申请号：US17422166

    申请日：2019-12-27

    Applicant: SICPA HOLDING SA

    Inventor： Evgeny Loginov ,  Mathieu Schmid ,  Edgar Mueller ,  Claude-Alain Despland

    IPC: B05D5/06 ,  B05D3/06 ,  B05D3/00

    Abstract: The present invention relates to the field of protecting value documents and value commercial goods against counterfeit and illegal reproduction. In particular, the present invention provides processes for producing optical effect layers (OELs) comprising non-spherical magnetic or magnetizable particles and comprising a motif made of at least two areas made of a single applied and cured layer, said motif being obtained by using a selective curing performed by irradiation with an actinic radiation LED source (x41) comprising an array of individually addressable actinic radiation emitters.

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