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:
Jun. 25, 2002
Filed:
Jul. 11, 2000
Applicant:
Inventors:
Guang Jin Choi, Seoul, KR;
Kyungja Woo, Seoul, KR;
Young Sang Cho, Seoul, KR;
Sang Jun Sim, Seoul, KR;
Young Dae Kim, Seoul, KR;
Sang Kyun Lee, Euijeongbu, KR;
Assignee:
Korea Institute of Science and Technology, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 2/300 ; C01F 1/00 ;
U.S. Cl.
CPC ...
C01G 2/300 ; C01F 1/00 ;
Abstract
The present invention provides a process of preparing barium titanate powders having fine particle morphology and superior crystallinity, by preparing a sol precursor by using a titanium acylate and a barium compound, spraying the sol precursor in a strong alkaline solution for coprecipitation, crystallizing the barium titanate with an optional hydrothermal reaction, and purifying the barium titanate powder by washing.