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:
Apr. 23, 1991
Filed:
Jan. 17, 1990
Applicant:
Inventors:
Takayuki Kawaguchi, Hachioji, JP;
Takashi Shiro, Hino, JP;
Kaoru Iwata, Hachioji, JP;
Takahiro Daido, Hino, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; C09B / ;
U.S. Cl.
CPC ...
430495 ; 430270 ; 430271 ; 430945 ; 540128 ; 540131 ; 540139 ; 540140 ; 428 64 ; 3461351 ;
Abstract
A novel naphthalocyanine based compound having Si atom as a central metal and groups selected from ##STR1## CN, and --CH.dbd.CH.sub.2 which is bonded to said Si atom via a specific hydrocarbon group, by which solubility in an organic solvent, compatibility with a polymeric substance and durability against an infrared ray are improved. The compound may be incorporated into a polymeric substance layer to form a recording layer of an optical recording medium.