Inventor
DEHMEL RAPHAEL
DE12 patents
Patents
12 patentsUS11345179B2May 31, 2022
Optically variable security arrangement
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH2 citations71
US11654709B2May 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
US12129382B2Oct 29, 2024
Effect pigment, production method, value document and printing ink
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations62
US11745474B2Sep 5, 2023
Composite glass with an intermediate film that changes colour depending on the viewing angle
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations58
US11802212B2Oct 31, 2023
Method for producing pigment fragments with a predefined internal and/or external contour using a crack-forming layer, and pigment fragments
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations57
US11325412B2May 10, 2022
Security element comprising micro-reflectors for a perspective representation of a motif
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH1 citations57
US12151500B2Nov 26, 2024
Optically variable security element
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations54
US11376883B2Jul 5, 2022
Security element comprising microreflectors
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations49
US12275265B2Apr 15, 2025
Security element
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations47
US11602949B2Mar 14, 2023
Method for manufacturing a value document, value document and printing device
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations47
US12391058B2Aug 19, 2025
Security element having tilt-dependent motif depiction and method for production thereof
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH0 citations46