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:
Feb. 17, 1998
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Kenji Yoshioka, Tokyo, JP;
Osamu Konno, Iruma, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369283 ;
Abstract
An optical card comprising an optical storage material for optically storing information and a visible information layer for storing visible information. The optical storage material has specific light transmittance to cause visible light to arrive at the visible information layer so that the visible information is observed through the optical storage material.
Yoshioka, Kenji. (1998). Optical storage medium with first layer containing optically readable (U.S. Patent No. 5719850). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5719850
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