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:
Oct. 03, 1988
Applicant:
Inventors:
Jerome Drexler, Los Altos Hills, CA (US);
Joseph B Arnold, Los Altos Hills, CA (US);
Assignee:
Drexler Technology Corp., , CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G06K / ;
U.S. Cl.
CPC ...
156250 ; 156267 ; 156277 ; 235454 ; 235456 ; 235462 ; 235488 ; 235494 ; 3461351 ;
Abstract
A method for making optical data cards wherein a preformatted recording tape having a continuous pattern of servo tracks is adhered to a web of data card base material. The data cards are then cut such that the ends of the tape coincide with ends of the card. Beginning and end marks to the servo tracks are laser written in situ on the card. A transparent protective layer may be applied over the recording strip. The continuous servo tracks may extend in a lengthwise direction to the strip as well as in a direction transverse to the lengthwise direction or may extend in both directions forming a grid pattern.