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:
Sep. 18, 1990
Filed:
Jan. 03, 1989
Applicant:
Inventors:
Ikuo Koyama, Tokyo, JP;
Hajime Ohata, Yamato, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369 98 ; 235454 ; 235481 ; 235488 ;
Abstract
An optical card for storing data includes a base member and a plurality of parallel linear tracks on the base member for storing the data. Address data is recorded alternately on an opposite end of each successive track for storing an identifying code corresponding to the respective track.
Koyama, Ikuo. (1990). Optical card with increased data storage capacity and (U.S. Patent No. 4958339). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4958339
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile