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:
Jul. 12, 2011
Filed:
Apr. 09, 2008
Applicants:
Tsung-cheng HU, Yongjing Township, Changhua County, TW;
Piin-jye Harn, Tainan, TW;
Inventors:
Tsung-Cheng Hu, Yongjing Township, Changhua County, TW;
Piin-Jye Harn, Tainan, TW;
Assignee:
Scinopharm Taiwan, Ltd., Tainan County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 491/22 (2006.01); C07D 491/147 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process of making topotecan or a pharmaceutically acceptable salt thereof comprising reacting an iminium salt with 10-hydroxy-camptothecin.