The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1995
Filed:
Mar. 10, 1993
Applicant:
Inventors:
Kazuo Tsuboi, Osaka, JP;
Koji Iguchi, Osaka, JP;
Assignee:
Omron Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; G11B / ;
U.S. Cl.
CPC ...
235488 ; 283 88 ; 283109 ; 235487 ; 3692751 ;
Abstract
An optical card having visible data marked on a base layer and a substantially transparent optical data recording layer formed over the base layer. A protective layer is laminated over the optical data recording layer. The visible data marked on the base may be marked in an ink visible only at a nonvisual wavelength, such as infrared. A reader scans the visible data marked on the base layer, since the optical recording layer covering the base layer is substantially transparent.