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:
Jul. 19, 1983
Filed:
Aug. 10, 1981
Applicant:
Inventors:
Pieter Van Pelt, Sunnyvale, CA (US);
Gerardus J Lippits, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G01D / ; G01D / ;
U.S. Cl.
CPC ...
430321 ; 430326 ; 430396 ; 3461351 ; 346 / ;
Abstract
A method of manufacturing an optically readable information carrier in which a substrate 1 which is provided on at least one surface with a material which is sensitive to deep ultraviolet light having a wavelength from 190-300 nm, is exposed to deep ultraviolet light via a contact mask 2 which on one side has a layer 4 of a material which is not permeable to deep ultraviolet light in which an information track 5, 6 has been provided, after which the exposed plate is developed and if desired is provided with a reflection layer.