US Patent Issued to ZEON on May 12 for "Identification medium, article, and identification medium use method" (Japanese Inventor)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,481, issued on May 12, was assigned to ZEON Corp. (Tokyo).

"Identification medium, article, and identification medium use method" was invented by Natsumi Fujiwara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An identification medium including a light reflection layer and a patterned phase difference layer, wherein the light reflection layer is a layer that reflects incident light as circularly polarized light or linearly polarized light, and the patterned phase difference layer is a layer that includes an area having a phase difference, and is a layer provided in the identification medium so that the area having a phase difference occupies a...