The invention relates to optical security elements, their use for identifying and authenticating objects and processes and devices for identifying and authenticating objects using the optical security elements.
申请公布号
BRPI0907765(A2)
申请公布日期
2015.07.14
申请号
BR2009PI07765
申请日期
2009.01.24
申请人
BAYER TECHNOLOGY SERVICES GMBH.;BAYER MATERIALSCIENCE AG