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:
Jan. 13, 2004
Filed:
Jun. 18, 2002
Applicant:
Inventor:
Clarke Slemon, Montreal, CA;
Assignee:
Torcan Chemical LTD, Aurora, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07J 7/300 ;
U.S. Cl.
CPC ...
C07D / ; C07J 7/300 ;
Abstract
Polymorphic Form (I) finasteride is prepared by first forming a substantially insoluble complex of finasteride and a Group (I) or Group (II) metal salt, such as lithium bromide, and then dissociating the complex by dissolving away the salt component with water, so as to obtain substantially pure Form (I) polymorphic crystalline finasteride.
Quick Actions:
Slemon, Clarke. (2004). Production of polymorphic forms i and ii of finasteride by complexation with group i or ii metal salts (U.S. Patent No. 6677453). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6677453
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