Assignee
CALLEGARI ANDREA
CH4 patents
Top patents by PatentIndex Score
US8186573B2May 29, 2012
Method of marking a document or item; method and device for identifying the marked document or item; use of circular polarizing particles
CALLEGARI ANDREA16 citations90
US8672218B2Mar 18, 2014
Method of marking a document or item; method and device for identifyng the marked document or item; use of circular polarizing particles
CALLEGARI ANDREA0 citations50
US9816031B2Nov 14, 2017
Composite marking based on chiral liquid crystal precursors
CALLEGARI ANDREA0 citations38
US8951438B2Feb 10, 2015
Simplified control of color shifting properties of a chiral liquid crystal polymer
CALLEGARI ANDREA0 citations38