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:
Jan. 07, 1992
Filed:
Feb. 22, 1990
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 430270 ; 430495 ; 430945 ; 346 / ; 3461351 ; 369288 ;
Abstract
The optical storage medium of the present invention comprises: (1) a substrate; (2) ultra-thin recording layers containing a dye; and (3) controlling layers. The recording layers and the controlling layers are accumulated alternately, and the uppermost layer is a controlling layer. The optical storage medium of the present invention contains dye cohesions in the recording layer in an extremely small amount and of extremely small size so that the medium can store a high density of records.