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:
Dec. 12, 2006
Filed:
Jul. 12, 2004
Dong Hwan Seo, Kyungki-do, KR;
Kang Heon Hur, Kyungki-do, KR;
Sung Hyung Kang, Kyungki-do, KR;
Jin Yung Ryu, Kyungki-do, KR;
Dong Hwan Seo, Kyungki-do, KR;
Kang Heon Hur, Kyungki-do, KR;
Sung Hyung Kang, Kyungki-do, KR;
Jin Yung Ryu, Kyungki-do, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
Disclosed herein is a small particle oxide powder for dielectrics. The oxide powder has a perovskite structure, an average particle diameter [D50(μm)] of 0.3 μm or less, a particle size distribution of the average particle diameter within 3%, a particle size distribution satisfying a condition D99/D50<2.5, a content of OHgroups of 0.2 wt % and a C/A axial ratio of 1.006 or more. A method of manufacturing the oxide powder comprises the steps of mixing TiOparticles and a compound solved with at least one element represented by A of the perovskite structure of ABO; drying and pulverizing the mixture of TiOand the compound; calcining the pulverized mixture; adding the oxide containing the elements of the site A to the coated TiOparticles and wet-mixing, drying and pulverizing; primarily calcining and pulverizing the pulverized powder under vacuum; and secondarily calcining and pulverizing the powder.