Invention Grant
- Patent Title: Process for producing fine α-alumina particles
- Patent Title (中): 生产精细α-氧化铝颗粒的方法
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Application No.: US11374968Application Date: 2006-03-15
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Publication No.: US07674525B2Publication Date: 2010-03-09
- Inventor: Hajime Maki , Yoshiaki Takeuchi , Yuzuru Saitou
- Applicant: Hajime Maki , Yoshiaki Takeuchi , Yuzuru Saitou
- Applicant Address: JP Tokyo
- Assignee: Sumitomo Chemical Company, Limited
- Current Assignee: Sumitomo Chemical Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-079002 20050318; JP2005-331289 20051116
- Main IPC: C01F7/38
- IPC: C01F7/38
Abstract:
The present invention provides a process for producing fine α-alumina particles, which comprises sintering a mixture of α-alumina precursor particles and seed crystal particles, wherein a center particle diameter of the seed crystal particles is 40 nm or less, and a ratio of the number of coarse particles having a particle diameter greater than 100 nm to the number of the total particles is 1% or less.
Public/Granted literature
- US20060210799A1 Process for producing fine alpha-alumina particles Public/Granted day:2006-09-21
Information query
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