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:
Apr. 30, 1991
Filed:
Dec. 04, 1989
Keizo Tanikawa, Funabashi, JP;
Ryozo Saloda, Funabashi, JP;
Sakuya Tanaka, Minamisaitama, JP;
Kenichi Shikada, Saitama, JP;
Nissan Chemical Industries Ltd., Tokyo, JP;
Abstract
A 3(2H)pyridazinone of the formula: ##STR1## wherein R.sub.1 is hydrogen, 2-propenyl, or straight chained or branched C.sub.1 -C.sub.4 alkyl; each of R.sub.2 and R.sub.3 which may be the same or different, is hydrogen, or straight chained or branched C.sub.1 -C.sub.3 alkyl; X is chlorine, or bromine; Y is hydrogen, halogen, nitro, amino, or --AR.sub.4 wherein A is oxygen, or sulfur, and R.sub.4 is hydroen, straight chained, branched or cyclic C.sub.1 -C.sub.8 alkyl, ##STR2## wherein R.sub.5 is hydrogen, or straight chained or branched C.sub.1 -C.sub.4 alkyl; and Ar is ##STR3## wherein each Z.sub.1 and Z.sub.2 which may be the same or different, is hydrogen, halogen, straight or branched C.sub.1 -C.sub.4 alkyl, or --OR.sub.6 wherein R.sub.6 is straight or branched C.sub.1 -C.sub.4 alkyl, and B is oxygen, sulfur, or --N.dbd.C-- (to form a quinoline or pyridine ring); or a pharamaceutically acceptable salt thereof.