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:
Nov. 25, 2014
Filed:
Feb. 26, 2010
Applicants:
Matthias Helmreich, Darmstadt, DE;
Claus Peter Niesert, Seeheim-Jugenheim, DE;
Michael Schulte, Bischofsheim, DE;
Wolfgang Lindner, Klosterneuburg, AT;
Michael Laemmerhofer, Vienna, AT;
Christian Hoffmann, Bayreuth, DE;
Inventors:
Matthias Helmreich, Darmstadt, DE;
Claus Peter Niesert, Seeheim-Jugenheim, DE;
Michael Schulte, Bischofsheim, DE;
Wolfgang Lindner, Klosterneuburg, AT;
Michael Laemmerhofer, Vienna, AT;
Christian Hoffmann, Bayreuth, DE;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 251/10 (2006.01);
U.S. Cl.
CPC ...
C07D 251/10 (2013.01);
Abstract
Method for the chromatographic separation of compounds of the formula (I), in which R, R, R, R, R, Rhave the meanings indicated in Claim, and acid-addition salts thereof, characterized in that the separation is carried out on a chiral ion-exchanger material.