Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Christopher Chapman Rich0
Joel Mikael Petersen0
Roger Winston Phillips0
Date of Patent
December 14, 2021
0Patent Application Number
167807770
Date Filed
February 3, 2020
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A document, product, or package, such as a banknote, passport or the like comprises structures having dichroic effects that change color with viewing angle in both transmission and reflection. Such structures can be useful as security features that counter the ability to effectively use counterfeit documents, products, packages, etc.
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