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:
Dec. 08, 1998
Filed:
Feb. 21, 1996
Applicant:
Inventors:
Toshiyuki Kashiwagi, Tokyo, JP;
Motohiro Furuki, Tokyo, JP;
Shoji Fukuchi, Shizuoka, JP;
Yoshitake Yanagisawa, Shizuoka, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 641 ; 428 642 ; 428 644 ; 428 647 ; 4286 / ; 4286 / ; 4286 / ; 43027011 ; 4304951 ; 430945 ; 3692754 ; 369283 ;
Abstract
An optical recording medium capable of recording and/or reproducing an information by using a laser beam, comprising: a support layer having an information signal-recording portion on one side surface thereof on which said laser beam is incident, and a transparent layer disposed over the support layer and having a thickness smaller than that of the support layer. In accordance with the present invention, there are further provided production method for optical or magneto-optical discs whereby a high density reproduction can be achieved.