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:
Aug. 04, 1998
Filed:
Nov. 20, 1996
Applicant:
Inventor:
Toru Yashiro, Yokosuka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
43027016 ; 430945 ; 427162 ;
Abstract
An optical recording medium is composed of a substrate and a light absorbing layer serving as recording layer formed on the substrate. The light absorbing layer includes a phthalocyanine compound and a compound having a group which can be coordinated to the phthalocyanine compound.