초록 ▼

A coded information structure capable of being decoded electronically comprising a base and a first layer of an electrically conductive or electromagneted radiation reflective layer adhered to said base wherein said layer having coded information in the form of areas of said layer having been vertic

A coded information structure capable of being decoded electronically comprising a base and a first layer of an electrically conductive or electromagneted radiation reflective layer adhered to said base wherein said layer having coded information in the form of areas of said layer having been vertically displaced and having ruptures or necking or the side of the depression and an insulating or transparent protective layer over said first layer.

대표청구항 ▼

A coded information carrying structure capable of being electronically decoded comprising (1) a base, (2) a first layer of an electrically conductive or electromagnetic radiation reflective layer adhered to at least one surface of said base, said layer having coded information in the form of depress

A coded information carrying structure capable of being electronically decoded comprising (1) a base, (2) a first layer of an electrically conductive or electromagnetic radiation reflective layer adhered to at least one surface of said base, said layer having coded information in the form of depressions in said layer having been vertically displaced a distance of from 0.03 to 10.0 micrometers, with said first layer having ruptures or necking on the sides of the depressions, and (3) an insulating or transparent protective layer over said first layer.