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. 12, 1980
Filed:
Apr. 16, 1976
Applicant:
Inventor:
Masatoshi Sugiyama, Minami-ashigara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548360 ; 548364 ; 548365 ; 544140 ; 544371 ; 546211 ; 2602399 ;
Abstract
3-Substituted amino-5-pyrazolones containing at least one sulfo group represented by the formula: ##STR1## and a process for producing the above pyrazolones by reacting a .beta.-substituted amino-.beta.-alkoxy acrylic acid derivative represented by the formula: ##STR2## and a hydrazine containing at least one sulfo group represented by the formula: