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:
Feb. 25, 1997
Filed:
Dec. 29, 1992
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An aminium salt compound has the structure expressed by the following formula (I) or (II), and an optical recording layer has a recording layer containing the aminium salt compound. ##STR1## wherein X.sup.- indicates a monovalent metal complex anion; and R.sub.1 through R.sub.8 each indicate a hydrogen atom or a monovalent organic residue, and at least one of R.sub.1 through R.sub.8 is a monovalent organic residue selected from the group consisting of a substituted or unsubstituted alkoxyalkyl group, substituted or unsubstituted alkenyl group, substituted or unsubstituted alkynyl group and substituted or unsubstituted aralkyl group; and n is 1 or 2; and ##STR2## wherein X.sup.- indicates a monovalent metal complex anion; and R.sub.1 ' through R.sub.8 ' indicate the atoms that, when taken together in combination R.sub.m ' and R.sub.m+1 ' (m=1, 3, 5 or 7) with a nitrogen atom N, at least one of such combinations forms a substituted or unsubstituted five-membered ring, substituted or unsubstituted six-membered ring or substituted or unsubstituted seven-membered ring; and n is 1 or 2.