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:
Mar. 06, 1990
Filed:
Aug. 26, 1988
Applicant:
Inventors:
Rinjiro Ichikawa, Tokyo, JP;
Toshio Ishida, Tokyo, JP;
Assignee:
Fujimori Kogyo Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 428420 ; 428522 ; 346761 ; 3461351 ; 430945 ; 369288 ;
Abstract
A flexible optical recording material in the shape of tape or floppy disk comprising an optically isotropic laminate (A) comprising at least one thermoplastic gas-impermeable synthetic resin film layer (1) and at least one cured crosslinking resin layer (2), said layers having been formed by casting and having a retardation value of not less than 80 nm as a whole, and a recording layer (B) disposed on at least one side of said optically isotropic laminate.