Inventor
ROZUMEK OLIVIER
CH20 patents
⚠️ This page may combine multiple inventors who share the name “ROZUMEK OLIVIER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SICPA HOLDING SA
14 patentsUS6695905B2Feb 24, 2004
Pigments having a viewing angle dependent shift of color, method for producing said pigments, use of said pigments in security applications, coating composition comprising said pigments and a detecting device
SICPA HOLDING SA72 citations98
US6200628B1Mar 13, 2001
Use of inorganic particles and method for making and identifying a substrate or an article
SICPA HOLDING SA79 citations96
US7702108B2Apr 20, 2010
Use of communication equipment and method for authenticating an item, unit and system for authenticating items, and authenticating device
SICPA HOLDING SA107 citations95
US6472455B1Oct 29, 2002
Ink composition comprising first and second optically variable pigments
SICPA HOLDING SA32 citations92
US6160046ADec 12, 2000
Abrasion-removable coating and method of application
SICPA HOLDING SA20 citations92
US4966628AOct 30, 1990
Security document printing ink
SICPA HOLDING SA37 citations92
US5658964AAug 19, 1997
Highly reactive printing inks
SICPA HOLDING SA30 citations91
US7798403B2Sep 21, 2010
Item carrying at least two data storage elements
SICPA HOLDING SA18 citations84
US6673420B1Jan 6, 2004
Inorganic sheet carrying symbols for making pigments
SICPA HOLDING SA14 citations84
US8864037B2Oct 21, 2014
Multilayer flake with high level of coding
SICPA HOLDING SA8 citations80
US6306929B1Oct 23, 2001
Bleeding ink for printing security documents
SICPA HOLDING SA18 citations79
US6793720B2Sep 21, 2004
Solid marking composition as writing means, a writing instrument, an optically variable marking layer and use of a plurality of optically variable pigments
SICPA HOLDING SA8 citations74
US6521036B1Feb 18, 2003
Optically variable pigments providing a color shift between two distinct colors, coating composition comprising the same, method for producing the same and substrate coated with the coating composition
SICPA HOLDING SA11 citations73
US7188768B1Mar 13, 2007
Printing ink, use of micro-wires as antennas in security documents, method for producing a security document and methods for authentication of security documents
SICPA HOLDING SA5 citations63
MARGUERETTAZ XAVIER
4 patentsUS8734679B2May 27, 2014
Identification and authentication using liquid crystal material markings
MARGUERETTAZ XAVIER46 citations94
US8740088B2Jun 3, 2014
Identification and authentication using liquid crystal material markings
MARGUERETTAZ XAVIER6 citations81
US8734678B2May 27, 2014
Identification and authentication using polymeric liquid crystal material markings
MARGUERETTAZ XAVIER4 citations70
US9200204B2Dec 1, 2015
Identification and authentication using polymeric liquid crystal material markings
MARGUERETTAZ XAVIER4 citations68