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:
Dec. 28, 2004
Filed:
Jul. 31, 2002
Process for resolution of tamsulosin and compounds, compositions, and processes associated therewith
Applicant:
Inventors:
Hans J Hoorn, Nijmegen, NL;
Theodorus H. A. Peters, Arnhem, NL;
Jaroslav Pis, Praha, CZ;
Radim Scigel, Praha, CZ;
Assignee:
Synthon BV, Nijmegen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
C07C / ;
Abstract
Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)- or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
Hoorn, Hans. (2004). Process for resolution of tamsulosin and compounds, compositions, and processes associated therewith (U.S. Patent No. 6835853). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6835853
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile