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:
Nov. 17, 2009
Filed:
Jan. 05, 2005
Applicants:
Viviana Braude, Kadima, IL;
Judith Aronhime, Rehovot, IL;
Shalom Shabat, Yavne, IL;
Inventors:
Assignee:
Teva Pharmaceutical Industries Ltd, Petah Tiqva, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/04 (2006.01); A61K 31/519 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided are processes for the preparation of sildenafil base and the citrate salt of sildenafil. Also provided are sildenafil citrate water adduct and a method of preparing pharmaceutical compositions comprising combining the sildenafil citrate and/or sildenafil citrate water adduct with at least one pharmaceutically-acceptable excipient.