Method for producing ultra fine particles

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United States of America Patent

PATENT NO 5556038
SERIAL NO

08305965

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for producing ultra fine particles is disclosed, wherein the method includes wet grinding particles with a media agitation mill, wherein ceramic particles having an average diameter of about 300 .mu.m or smaller are used as grinding media in the media agitation mill. Desirably, the media has an average particle diameter standard deviation of 15 or smaller, a sphericity of 1.07 or smaller, and a density of 6.0 g/cm.sup.3 or more.

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Patent Owner(s)

  • SHOWA SHELL SEKIYU K.K.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kodama, Shougo Tokyo, JP 2 10
Nakamura, Masayoshi Tokyo, JP 75 503
Ohki, Teruaki Tokyo, JP 1 7

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