BARIUM TITANATE POWDER COATED WITH AN OXIDE LAYER, AND A PRODUCTION METHOD THEREFOR

WIPO Patent Application WO/2010/140868

A3

The present invention relates to a barium titanate powder coated with an oxide layer and to a production method therefor, wherein the barium titanate powder consists of an auxiliary component oxide layer coated onto the surface of a barium titanate particle constituting the main component, and in which the thickness of the oxide layer constituting the auxiliary component is adjusted to be in a range of from 0.01 to 30 nm, in order to produce a starting material for electronic products which satisfy both the X7R characteristics stipulated in the EIAJ standards and the B characteristics stipulated in the JIS standards, which have good temperature stability capacitance and insulation resistance values, good relative dielectric constants, and the insulation resistance has a lengthy accelerated lifetime.

CHANG KIL-WAN (KR)
LIM KWANG-SU (KR)
CHOI BYUNG-KI (KR)
LEE JIN-HYOUNG (KR)
SON YONG-HO (KR)
YOON DAE-HO (KR)
MASAKI TAKAKI (KR)
HUR MAN-GYU (KR)

PCT/KR2010/003613

March 31, 2011

June 04, 2010

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CQV CO LTD (KR)
CHANG KIL-WAN (KR)
LIM KWANG-SU (KR)
CHOI BYUNG-KI (KR)
LEE JIN-HYOUNG (KR)
SON YONG-HO (KR)
YOON DAE-HO (KR)
MASAKI TAKAKI (KR)
HUR MAN-GYU (KR)

C01G23/00; C04B35/468; H01B3/12; H01G4/12; H01G4/30

US5977006A	1999-11-02
US6071842A	2000-06-06
US20020090335A1	2002-07-11

CHRISTOPHE HUBER ET AL., JOURNAL OF MATERIAL CHEMISTRY, vol. 13, 2003, pages 650 - 653
RENZHENG CHEN ET AL., MATERIAL LETTERS, vol. 54, 2002, pages 314 - 317

DAE-A INTERNATIONAL IP & LAW FIRM (830-71Yeoksam-dong, Gangnam-gu, Seoul 135-936, KR)

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