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:
May. 25, 2021
Filed:
Jun. 05, 2018
Applicants:
Zhejiang Huahai Pharmaceutical Co., Ltd., Zhejiang, CN;
Shanghai Aobo Pharmtech, Inc., Ltd., Shanghai, CN;
Assignees:
Zhejiang Huahai Pharmaceutical Co., Ltd., Zhejiang, CN;
Shanghai Aobo Pharmtech, Inc., Ltd., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 211/32 (2006.01); C07C 63/46 (2006.01);
U.S. Cl.
CPC ...
C07D 211/32 (2013.01); C07C 63/46 (2013.01);
Abstract
Disclosed is a new method for preparing a donepezil pamoate (1-benzyl-4-[(5,6-dimethoxyindan-2-one)methyl]piperidine pamoate). The donepezil pamoate prepared by using the method has a high purity and a good flowability.