Polishing liquid composition

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United States of America Patent

PATENT NO 8617994
APP PUB NO 20130109194A1
SERIAL NO

13717589

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A polishing liquid composition includes composite oxide particles containing cerium and zirconium, a dispersing agent, and an aqueous medium. A powder X-ray diffraction spectrum of the composite oxide particles obtained by CuKα1 ray (λ=0.154050 nm) irradiation includes a peak (first peak) having a peak top in a diffraction angle 2θ (θ is a Bragg angle) range of 28.61 to 29.67°, a peak (second peak) having a peak top in a diffraction angle 2θ range of 33.14 to 34.53°, a peak (third peak) having a peak top in a diffraction angle 2θ range of 47.57 to 49.63°, and a peak (fourth peak) having a peak top in a diffraction angle 2θ range of 56.45 to 58.91°. A half-width of the first peak is 0.8° or less.

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Patent Owner(s)

Patent OwnerAddress
KAO CORPORATIONCHUO-KU TOKYO 103-8210

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shirota, Mami Wakayama, JP 9 69
Yoneda, Yasuhiro Wakayama, JP 83 1254

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