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. 05, 2017
Filed:
Jan. 25, 2017
Applicant:
Boehringer Ingelheim International Gmbh, Ingelheim am Rhein, DE;
Inventors:
Waldemar Pfrengle, Biberach an der Riss, DE;
Thorsten Pachur, Biberach an der Riss, DE;
Thomas Nicola, Mainz, DE;
Adil Duran, Biberach an der Riss, DE;
Assignee:
Boehringer Ingelheim International GmbH, Ingelheim am Rhein, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/04 (2006.01); C07D 473/04 (2006.01); C07D 473/06 (2006.01);
U.S. Cl.
CPC ...
C07D 401/04 (2013.01); C07D 473/04 (2013.01); C07D 473/06 (2013.01); C07B 2200/07 (2013.01);
Abstract
The invention relates to an improved process for preparing enantiomerically pure 8-(3-aminopiperidin-1-yl)-xanthines.