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. 13, 1977
Filed:
Jun. 28, 1976
Eric Alfred Watts, Harlow, EN;
Beecham Group Limited, , GB;
Abstract
Compounds of the formula ##STR1## wherein R.sub.3 is hydrogen, halogen, alkyl of 1 to 6 carbon atoms, alkenyl of 2 to 6 carbon atoms, alkoxyl of 1 to 6 carbon atoms, alkenyloxyl of 2 to 6 carbon atoms, alkylthio of 1 to 6 carbon atoms, hydroxyl, amino, alkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms, nitro, trifluoromethyl, acylamino of 2 to 7 carbon atoms, alkoxysulphonylamino of 1 to 6 carbon atoms, carboxyl, nitrile, AOR.sub.4, ASR.sub.7, ASO.sub.2 R.sub.7, ANHR.sub.7, ANR.sub.7 COR.sub.8, ANR.sub.7 SO.sub.2 R.sub.8 or ANR.sub.7 CO.sub.2 R.sub.8, wherein A is alkylene of 1 to 4 carbon atoms, R.sub.7 is alkyl of 1 to 4 carbon atoms and R.sub.8 is alkyl of 1 to 4 carbon atoms;