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:
Jul. 10, 1990
Filed:
Jan. 19, 1989
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
Disclosed is a photographic spectral sensitizing dye represented by the following formula (I), (II) or (III): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.5 or R.sub.7 each represents an alkyl group, an aralkyl group or an alkenyl group, R.sub.4 and R.sub.6 each represents an alkyl group, aralkyl group, an alkenyl group or an aryl group, L.sub.1 -L.sub.22 each represents a methine group, Z.sub.1 -Z.sub.4 each represents a group of atoms necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring, X.sub.1.sup.- and X.sub.2.sup.- each represents an acid anion and l, m, n, p, q, r, s, t and u each represents an integer of 1 or 2. Silver halide photographic emulsion containing the above sensitizing dye is also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile