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US Patent 11768321 Optically variable security devices

Patent 11768321 was granted and assigned to VIAVI Solutions on September, 2023 by the United States Patent and Trademark Office.

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Patent attributes

Patent Applicant

VIAVI Solutions

Current Assignee

VIAVI Solutions

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

Patent Inventor Names

Thomas Mayer

Scott Lamar

Roger W. Phillips

Elena Taguer

Date of Patent

September 26, 2023

Patent Application Number

17955454

Date Filed

September 28, 2022

Patent Citations

US Patent 7258900 Magnetic planarization of pigment flakes

US Patent 7300695 Alignable diffractive pigment flakes

US Patent 7258915 Flake for covert security applications

US Patent 7089420 Authentication method and system

US Patent 7169472 Robust multilayer magnetic pigments and foils

US Patent 7224528 Optically variable security devices

US Patent 7229520 Method for manufacturing spandrel glass film with metal flakes

US Patent 7241489 Opaque flake for covert security applications

Patent Primary Examiner

Derek S. Chapel

Patent abstract

An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.

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