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:
Feb. 20, 2007
Filed:
May. 06, 2002
Jae Chul Jung, Daejeon, KR;
Woo Young Yang, Daejeon, KR;
Keon IL Kim, Daejeon, KR;
Yun Jung Park, Daejeon, KR;
Jun Hee Lee, Daejeon, KR;
Kang Heon Hur, Kyunggi-do, KR;
Seon Cheol Park, Kyunggi-do, KR;
Jai Joon Lee, Kyunggi-do, KR;
Jae Chul Jung, Daejeon, KR;
Woo Young Yang, Daejeon, KR;
Keon Il Kim, Daejeon, KR;
Yun Jung Park, Daejeon, KR;
Jun Hee Lee, Daejeon, KR;
Kang Heon Hur, Kyunggi-do, KR;
Seon Cheol Park, Kyunggi-do, KR;
Jai Joon Lee, Kyunggi-do, KR;
Abstract
The present invention relates to a method for preparing barium titanate based powder. More particularly, the present invention provides a method for preparing barium titanate powder comprising the following steps of precipitation of barium titanyl oxalate (BaTiO(CO).4HO) with spraying a mixture of an aqueous barium chloride (BaCl.2HO) and titanium tetrachloride (TiCl) to an aqueous solution of oxalic acid, via a nozzle; wet pulverization by using a beads mill after adding an additive such as an amine; dry; pyrolysis; and re-pulverization.