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. 05, 1992
Filed:
Dec. 26, 1989
Applicant:
Inventors:
Masa-aki Suzuki, Neyagawa, JP;
Eiji Ando, Katano, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428426 ; 4284111 ; 428913 ; 346 / ; 3461351 ;
Abstract
An optical storage medium comprising a recording layer containing organic dye molecules which allows recording due to change in the molecular structure or molecular aggregate structure induced by irradiation with light, and a stable controlling layer formed on the recording layer, which controlling layer is stable against the irradiation by the lights for recording or reading out. A multi-frequency optical storage medium comprises a plurality of a combination of the recording layers and the controlling layer as a separating layer.