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, 1993
Filed:
Mar. 28, 1991
Applicant:
Inventors:
Tetsuro Fukui, Kawasaki, JP;
Yoshhiro Oguchi, Yokohama, JP;
Kyo Miura, Sagamihara, JP;
Yoshio Takasu, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
430495 ; 430945 ; 430270 ; 3461351 ;
Abstract
An optical information recording medium comprises at least one compound, selected from the compounds of the general formulae (1-I) to (3-III) shown and pyrylium compounds, and a metal chelate compounds in the recording medium.