Invention Grant
- Patent Title: Roundish fused alumina particles, production process thereof, and resin composition containing the particles
- Patent Title (中): 圆形熔融氧化铝颗粒，其制备方法和含有颗粒的树脂组合物
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Application No.: US10591079Application Date: 2005-03-15
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Publication No.: US07789330B2Publication Date: 2010-09-07
- Inventor: Hirokazu Miyazawa , Shinichiro Tomikawa
- Applicant: Hirokazu Miyazawa , Shinichiro Tomikawa
- Applicant Address: JP Tokyo
- Assignee: Showa Denko K.K.
- Current Assignee: Showa Denko K.K.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2004-073345 20040315; JP2004-336293 20041119
- International Application: PCT/JP2005/005045 WO 20050315
- International Announcement: WO2005/087665 WO 20050922
- Main IPC: B02C19/06
- IPC: B02C19/06
Abstract:
A roundish fused alumina particles having a mean particle size of 5 to 4,000 μm and a roundness of 0.85 or more, and a producing method thereof are provided. The method comprises removing edges of fused alumina particles by making the fused alumina particles collide with each other.
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