Composite oxide powder and method for production thereof

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United States of America Patent

PATENT NO 11932543
APP PUB NO 20210009432A1
SERIAL NO

16978299

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Abstract

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Composite oxide fine particles are produced by sol-gel method under conditions in which coarse particles and aggregated particles are unlikely to be generated, and the composite oxide fine particles are further wet-filtered using a filter to remove the coarse particles and the aggregated particles. Then, a salt is added to a dispersion of the composite oxide fine particles to produce weak aggregates of the composite oxide fine particles in the dispersion. A solid content is separated from the dispersion of the composite oxide fine particles containing the aggregates, and then dried. The solid content is easily made finer because no firm aggregates are generated during the drying. That is, composite oxide fine particles containing no coarse particles and aggregated particles are obtained. Use of a known cracking means can further reduce the amount of coarse particles.

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Patent Owner(s)

Patent OwnerAddress
TOKUYAMA CORPORATION1-1 MIKAGE-CHO SHUNAN-SHI YAMAGUCHI 745-8648

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujioka, Hiromasa Shunan, JP 3 1
Taira, Hiroaki Shunan, JP 32 229
Tanaka, Osamu Shunan, JP 207 2642

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