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, 1985
Filed:
May. 19, 1983
Applicant:
Inventors:
Assignee:
UBE Industries, Ltd., Ube, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ; C07C / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546306 ; 548233 ; 548236 ; 548245 ; 548246 ; 548247 ; 564 48 ; 564 58 ; 564 57 ; 564 61 ;
Abstract
A process for the preparation of a urea derivative having the formula: ##STR1## in which A represents a straight- or branched-chain alkyl group having 1-20 carbon atoms, an aryl group, or a heterocyclic group, and each of R.sup.1 and R.sup.2 represents hydrogen, a straight- or branched-chain alkyl group having 1-20 carbon atoms, an alicyclic group, or an aryl groups, which comprises: