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. 01, 2009
Filed:
Dec. 13, 2004
Applicants:
Michael John Harris, Manchester, GB;
Stuart Brown, Manchester, GB;
Inventors:
Michael John Harris, Manchester, GB;
Stuart Brown, Manchester, GB;
Assignee:
Sosei R&D Ltd., Essex, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 487/00 (2006.01); C07D 491/00 (2006.01); C07D 513/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for increasing the optical purity of a mixture of enantiomers of nefopam uses a substantially single enantiomer of a O,O-diaroyltartaric acid as a resolving agent, via a bisnefopam salt of the acid. This salt is new.