Aluminum alloy disc blank for magnetic disc and magnetic disc

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12087342
APP PUB NO 20230335161A1
SERIAL NO

18339994

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Abstract

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An aluminum alloy disc blank for a magnetic disc made of an aluminum alloy containing Fe: 0.005 to 1.800 mass % with the balance being Al and inevitable impurities, wherein a flatness change of the aluminum alloy disc blank for a magnetic disc when the aluminum alloy disc blank for a magnetic disc is held in the atmosphere at 50° C. or lower for 336 hours is 2.0 μm or less.

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Patent Owner(s)

Patent OwnerAddress
UACJ CORPORATIONTOKYO
FURUKAWA ELECTRIC CO LTDTOKYO 100

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hatakeyama, Hideyuki Tokyo, JP 51 226
Kitawaki, Kotaro Tokyo, JP 38 97
Kumagai, Wataru Tokyo, JP 18 75
Nakamura, Toshihiro Tokyo, JP 114 794
Sakamoto, Ryo Tokyo, JP 47 159
Todo, Shinpei Tokyo, JP 10 27
Yamada, Ryohei Tokyo, JP 25 46

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