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:
May. 27, 2008
Filed:
May. 16, 2003
Applicants:
Rainer Naeff, Schlatt, CH;
Sonja Spycher-huber, Benken, CH;
Thomas Hunziker, Schaffhausen, CH;
Guenter Laufer, Singen, DE;
Inventors:
Rainer Naeff, Schlatt, CH;
Sonja Spycher-Huber, Benken, CH;
Thomas Hunziker, Schaffhausen, CH;
Guenter Laufer, Singen, DE;
Assignee:
Cilag GmbH International, Schaffhausen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 1/06 (2006.01); C07C 215/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Processes for isolation and purification of enantiomerically enriched compositions comprising tramadol and topiramate, and also for the subsequent isolation of 1S,2S-tramadol hydrochloride, are disclosed herein.