ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,197, issued on Nov. 11, was assigned to Sony Group Corp. (Tokyo).
"Data protector, data protection seal, and drawing device" was invented by Takehisa Ishida (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A data protector according to an embodiment of the present disclosure includes: a data layer configured to record confidential information as a visible image; and one or a plurality of cover layers disposed at least one of above or below the data layer and configured to transition between a color-developed state and a decolored state in a visible wavelength region."
The patent was filed on Feb. 13, 2020, under Application No. 17/436,138.
*F...