Inventor
KRIETSCH BURKHARD
DE8 patents
⚠️ This page may combine multiple inventors who share the name “KRIETSCH BURKHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MERCK PATENT GMBH
4 patentsUS6214917B1Apr 10, 2001
Laser-markable plastics
MERCK PATENT GMBH87 citations95
US6521688B1Feb 18, 2003
Laser-markable plastics
MERCK PATENT GMBH40 citations90
US7713616B2May 11, 2010
Dual security mark
MERCK PATENT GMBH8 citations83
US8039094B2Oct 18, 2011
Machine-readable security element for security products
MERCK PATENT GMBH4 citations60
KRIETSCH BURKHARD
3 patentsUS8940189B2Jan 27, 2015
Intensely coloured and/or optically variable pigments having an electrically conductive core
KRIETSCH BURKHARD4 citations71
US8454861B2Jun 4, 2013
Optically variable pigments of high electrical conductivity
KRIETSCH BURKHARD3 citations60
US8540812B2Sep 24, 2013
Machine-readable security element for security products
KRIETSCH BURKHARD2 citations59