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. 21, 1999
Filed:
Mar. 26, 1998
Applicant:
Inventors:
Takashi Ohno, Yokohama, JP;
Masao Komatsu, Jurong, SG;
Masae Kubo, Yokohama, JP;
Masaaki Mizuno, Yokohama, JP;
Natsuko Nobukuni, Yokohama, JP;
Michikazu Horie, Yokohama, JP;
Haruo Kunitomo, Kurashiki, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 641 ; 428 642 ; 428 645 ; 428457 ; 428913 ; 43027013 ; 4304951 ; 430945 ; 369283 ; 369288 ;
Abstract
An optical information recording medium for recording, retrieving and erasing mark length-modulated amorphous marks, which comprises a substrate, and a lower protective layer, a phase-change recording layer, an upper protective layer and a reflective layer having a thickness of from 40 to 300 nm and a volume resistivity of from 20 to 150 n.OMEGA..multidot.m, formed in this sequence on the substrate.