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. 09, 2017
Filed:
Mar. 06, 2015
Applicant:
Shanghai Phichem Material Co., Ltd., Shanghai, CN;
Inventors:
Bing Zhao, Shanghai, CN;
Yun Zhang, Shanghai, CN;
Yinsheng Wang, Shangai, CN;
Jinshan Zhang, Dublin, CA (US);
Assignee:
Shanghai Phichem Material Co., Ltd., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 7/00 (2006.01); C01F 7/42 (2006.01); C01F 7/44 (2006.01);
U.S. Cl.
CPC ...
C01F 7/42 (2013.01); C01F 7/428 (2013.01); C01F 7/441 (2013.01); C01P 2006/80 (2013.01);
Abstract
This application discloses methods and processes for preparation of high purity aluminum hydroxide and high purity aluminum oxide. The method of preparing high purity aluminum hydroxide involves reacting aluminum with water in the presence of one or more catalysts and one or more complexing agents that can react with non-aluminum metal impurities to form soluble complexes for effective removal through rinsing.