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. 16, 2008
Filed:
Aug. 03, 2006
Applicants:
Michal Hasson, Beer Sheva, IL;
Hila Isenberg, Gedera, IL;
Efrat Manoff, Lehavim, IL;
Moshe Bentolila, Moshav Tekoma, IL;
Oded Friedman, Yehiel, IL;
Lior Zelikovitch, Mazkeret Batya, IL;
Inventors:
Michal Hasson, Beer Sheva, IL;
Hila Isenberg, Gedera, IL;
Efrat Manoff, Lehavim, IL;
Moshe Bentolila, Moshav Tekoma, IL;
Oded Friedman, Yehiel, IL;
Lior Zelikovitch, Mazkeret Batya, IL;
Assignee:
Chemagis, Ltd., Bnei Brak, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 31/4196 (2006.01); C07D 249/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a process for purifying a letrozole product that contains an isoletrozole impurity, which process preferably includes converting at least a portion of the isoletrozole impurity into 4,4'-dicyanobenzophenone and removing 4,4′-dicyanobenzophenone, to produce a purified letrozole product.