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. 12, 1988
Filed:
Aug. 19, 1986
Applicant:
Inventors:
Sumio Hirose, Yokohama, JP;
Hiroshi Ozawa, Isehara, JP;
Kenji Abe, Yokohama, JP;
Yoichi Hosono, Yokohama, JP;
Shigeru Takahara, Kamakura, JP;
Tadashi Koike, Kamakura, JP;
Assignees:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Yamamoto Chemicals, Inc., Yao, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369109 ; 369275 ; 369288 ; 430495 ; 430945 ;
Abstract
An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote ether groups respectively having R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each of which is a saturated or unsaturated hydrocarbon group having 4-12 carbon atoms.