Inventor
DORFF GISELHER
DE3 patents
Patents
3 patentsUS11654709B2May 23, 2023
Optically variable security element having reflective surface region
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH2 citations69
US11623465B2Apr 11, 2023
Optically variable security element having reflective surface region
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH3 citations69
US12240263B2Mar 4, 2025
Security element transfer material for transfer, in good register, of security elements to value documents
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations41