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. 21, 2015
Filed:
Dec. 28, 2012
Applicant:
Betta Pharmaceuticals Co., Ltd., Zhejiang, CN;
Inventors:
Assignee:
Betta Pharmaceuticals Co., Ltd., Hangzhou, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 323/00 (2006.01); C07D 491/056 (2006.01); C07D 405/04 (2006.01); C07D 325/00 (2006.01);
U.S. Cl.
CPC ...
C07D 491/056 (2013.01); C07D 323/00 (2013.01); C07D 325/00 (2013.01); C07D 405/04 (2013.01);
Abstract
The present invention relates to the technical field of medicine, and specifically provides methods for preparing Icotinib, Icotinib hydrochloride, and intermediates thereof. These methods avoid the use of phosphorus oxychloride, thereby greatly reducing the emission of pollutants, which is of major benefits to the economy and environment.