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:
Dec. 07, 1976
Filed:
Sep. 27, 1974
Teruo Kobayashi, Minami-ashigara, JA;
Masatoshi Sugiyama, Minami-ashigara, JA;
Hiroshi Sawaguchi, Minami-ashigara, JA;
Fuji Photo Film Co., Ltd., Minami-ashigara, JA;
Abstract
A styryl and butadienyl dye suitable as a filter dye or antihalation dye for photography having the formula ##STR1## wherein R represents a lower alkyl group, an unsubstituted or substituted sulfo lower alkyl group, an unsubstituted or substituted sulfo lower alkenyl group, or a carboxy lower alkyl group; A represents an atom necessary for forming a 5-membered or 6-membered heterocyclic ring; Z represents a hydrogen atom, a methyl group, or a phenyl group; B represents a hydrogen atom, a lower alkyl group, a hydroxyl group, an alkoxy group, a halogen atom, a nitro group, a carboxyl group, an unsubstituted or substituted acylamino group, an alkoxycarbonylamino group, an alkylsulfonylamino group, or an alkylthio group; R.sub.1 represents --OR.sub.2 or ##STR2## R.sub.2 represents an unsubstituted or substituted sulfo lower alkyl group; R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aralkyl group, an unsubstituted or substituted aryl group, an arylsulfonyl group, or an acetyl group; at least one of R.sub.3 and R.sub.4 containing at least one sulfo group; X represents an acid anion; and n and p each represents 0 or 1.