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:
Mar. 02, 1993
Filed:
Oct. 11, 1990
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
430495 ; 430270 ; 430945 ; 3461351 ;
Abstract
An optical recording medium contains at least one squarylium- or croconium-base dye of formulae [I] or [II], and a carboxylic acid-base metallic complex: ##STR1## where A.sym. is a cationic bivalent organic residue and B is a monovalent organic residue. The optical recording medium has an absorption band for light in the long wavelength region and is superior in stability against heat and light.
Santoh, Tsuyoshi. (1993). Optical recording medium containing carboxylic acid-base metallic (U.S. Patent No. 5190849). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5190849
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile