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:
Nov. 02, 1999
Filed:
Dec. 18, 1996
Applicant:
Inventor:
Tomoyuki Tamura, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
3692751 ; 235488 ;
Abstract
An optical recording medium includes an optical recording layer readable by radiation within a first wavelength band, and first and second visible information layers. The first information region is overlaid by the optical recording layer. An opaque layer is provided between the first and second information layers. The optical recording layer has a transmissivity for visible radiation so that the first visible information is visually readable through the optical recording layer.