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:
Mar. 21, 2006
Filed:
Nov. 23, 1999
Applicants:
Rudolf Eckardt, Radebeul, DE;
Hans-joachim Jänsch, Radebeul, DE;
Inventors:
Rudolf Eckardt, Radebeul, DE;
Hans-Joachim Jänsch, Radebeul, DE;
Assignee:
Degussa AG, Hanau-Wolfgang, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 223/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns a process for producing 5H-dibenz[b,f]azepine-5-carboxamide (carbamazepine) by reacting iminostilbene with an alkali cyanate in acetic acid or a mixture of acetic acid with water or with alcohol.