Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Roger Winston Phillips0
Christopher Chapman Rich0
Joel Mikael Petersen0
Date of Patent
December 12, 2023
0Patent Application Number
174459960
Date Filed
August 26, 2021
0Patent Citations
...
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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