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:
May. 24, 1983
Filed:
Sep. 04, 1981
Applicant:
Inventors:
Takashi Takaoka, Yokohama, JP;
Masahiko Mochizuki, Yokohama, JP;
Tadao Miura, Yokohama, JP;
Mitsuo Yamashita, Tokyo, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369284 ; 369275 ; 369283 ; 369286 ; 369288 ; 3461351 ; 428 64 ; 428 65 ; 428469 ; 428913 ; 430945 ; 430961 ; 350D / ;
Abstract
A method of making an optical memory disk and a product thereby comprising the steps of applying a thin tellurium film to a base plate, and of forming an oxidizing layer on the surface of the tellurium by oxidizing treatment of the tellurium film, and an optical memory disk produced by the above-mentioned method.