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Ceramic particle group comprising sintered particles of hydroxyapatite 実績あり

外国特許コード F110005389
整理番号 K02014US2
掲載日 2011年9月5日
出願国 アメリカ合衆国
出願番号 65968810
公報番号 20100173158
公報番号 8153255
出願日 平成22年3月17日(2010.3.17)
公報発行日 平成22年7月8日(2010.7.8)
公報発行日 平成24年4月10日(2012.4.10)
国際出願番号 JP2005016837
国際公開番号 WO2006030782
国際出願日 平成17年9月13日(2005.9.13)
国際公開日 平成18年3月23日(2006.3.23)
優先権データ
  • 特願2004-267404 (2004.9.14) JP
  • 特願2005-041348 (2005.2.17) JP
  • 2005WO-JP16837 (2005.9.13) WO
  • 2007US-11662629 (2007.3.13) US
発明の名称 (英語) Ceramic particle group comprising sintered particles of hydroxyapatite 実績あり
発明の概要(英語) (US8153255)
A ceramic particle group dispersed in a solvent in a state of primary particles of single crystal, a method for production thereof and a use thereof are disclosed.
In one embodiment a method is disclosed for producing a sintered particle (ceramic particle) group of hydroxyapatite (HAp), which includes a step of subjecting a system wherein calcium carbonate is present between primary particles of hydroxyapatite (HAp) to sintering and then dissolving calcium carbonate with water to remove calcium carbonate.
A hydroxyapatite (HAp) sintered particle group produced by the above method is a nanometer size particle group having a particle diameter of about 70 to about 120 nm, and is a particle group having a uniform particle diameter (coefficient of variation: 12%), and further 96% of the particle group is dispersed as a single crystal particle.
特許請求の範囲(英語) [claim1]
1. A ceramic particle group comprised of granular ceramic particles: wherein a majority of the ceramic particles in the ceramic particle group are monocrystalline primary particles, which are either primary particles of single crystal, or a cluster of primary particles of single crystal that are held together by ionic interactions;
wherein a proportion of the monocrystalline primary particles contained in the ceramic particle group is no less than 70%;
wherein the ceramic particles have a particle diameter in a range of 10 nm to 700 nm;
wherein a coefficient of variation of particle diameter of the ceramic particle group is no greater than 20%; and
wherein the ceramic particles comprise sintered particles of hydroxyapatite.
[claim2]
2. A chromatography filler, which comprises a ceramic particle group of claim 1.
[claim3]
3. A dental or medical material, which comprises a ceramic particle group of claim 1.
[claim4]
4. A cosmetic additive which comprises a ceramic particle group of claim 1.
[claim5]
5. A building material, which comprises a ceramic particle group of claim 1.
[claim6]
6. An industrial material, which comprises a ceramic particle group of claim 1.
  • 発明者/出願人(英語)
  • FURUZONO TSUTOMU
  • OKADA MASAHIRO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
参考情報 (研究プロジェクト等) PRESTO Nanostructure and Material Property AREA
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