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:
Sep. 20, 2016
Filed:
Nov. 02, 2010
Applicants:
Johannes Platzek, Berlin, DE;
Wilhelm Trentmann, Münster, DE;
Inventors:
Johannes Platzek, Berlin, DE;
Wilhelm Trentmann, Münster, DE;
Assignee:
Bayer Intellectual Property GMBH, Monheim, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 257/02 (2006.01);
U.S. Cl.
CPC ...
C07D 257/02 (2013.01);
Abstract
A process for the preparation of the calcium complex of 10-(2, 3-Dihydroxy-1-(hydroxymethyl)propyl)-1,4,7,10-tetraazacyclodecane-4,7-triacetic acid, also known as Calcobutrol, starting from the pure gadolinium complex (Gadobutrol) is disclosed. Also disclosed is Calcobutrol with a hitherto unknown level of purity.