公开(公告)号：US10417856B2

公开(公告)日：2019-09-17

申请号：US15536917

申请日：2015-12-16

Applicant: GIESECKE & DEVRIENT GMBH

Inventor： Martin Clara ,  Thomas Giering ,  Johann Kecht ,  Wolfgang Rauscher ,  Martin Stark ,  Thomas Happ

IPC: G07D7/1205 ,  G01N21/65

Abstract: The invention relates to an apparatus and a method for checking value documents marked with feature substances, and to the corresponding feature substances. The feature substances are detected on the basis of Raman or SERS spectroscopy also at high transport speeds with a spatial resolution in the low millimeter region or better and reliably identified.

公开(公告)号：US10013835B2

公开(公告)日：2018-07-03

申请号：US15120309

申请日：2015-02-18

Applicant: GIESECKE & DEVRIENT GMBH

Inventor： Johann Kecht ,  Martin Stark

IPC: G07D7/12 ,  D21H21/48 ,  B42D25/382 ,  B42D25/378 ,  G07D7/2033 ,  B42D25/21 ,  B42D25/29 ,  B42D25/387 ,  G01N21/64 ,  G07D7/1205

CPC classification number: G07D7/12 ,  B42D25/21 ,  B42D25/29 ,  B42D25/378 ,  B42D25/382 ,  B42D25/387 ,  D21H21/48 ,  G01N21/6428 ,  G07D7/1205 ,  G07D7/2033

Abstract: The invention relates to a security feature for safeguarding value documents, comprising particles which are composed of at least two different, spatially separate solid homogeneous phases, wherein each of the phases is detectable and identifiable in a spatially resolved manner by means of a spatially resolving analytical method that is adapted for resolving down to the single-particle level.

公开(公告)号：US10363767B2

公开(公告)日：2019-07-30

申请号：US14888864

申请日：2014-05-05

Applicant: GIESECKE & DEVRIENT GMBH

Inventor： Kai Uwe Stock ,  Martin Stark

IPC: B42D25/29 ,  G07D7/1205 ,  G07D7/00 ,  G01N23/223 ,  G01N21/65 ,  B41M3/14 ,  B42D25/405 ,  B42D25/00 ,  C09K11/68 ,  C09K11/77 ,  D21H21/30 ,  D21H21/40 ,  G01N23/20091

Abstract: The invention concerns a method for marking a feature substance, present in particular in pulverized form, with at least one marker, with the feature substance being suitable for the authentication of value documents, comprising the step of mixing the feature substance with a small quantity of the marker present in the form of particles, so that the macroscopic detectability of the feature substance is not influenced by the marker and the marker is detectable in a value document having a security feature containing the marked feature substance by means of a spatially resolving analytical method which is adapted to resolve down to the single-particle level.