Fastener member

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12188131
APP PUB NO 20210388505A1
SERIAL NO

17271267

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A black metal fastener member can be manufactured at low cost. The fastener member comprises a base material made of a copper alloy containing zinc at a concentration of 30% by mass or more and 43% by mass or less, and a black copper oxide coating covering at least a part of the base material. The black copper oxide coating has a lower layer and an upper layer. The lower layer is a layer below a center line with respect to the thickness of the black copper oxide coating and the upper layer is a layer above the center line. The porosity of the lower layer is smaller than the porosity of the upper layer. In some cases, the difference between the porosity of the lower layer and the porosity of the upper layer is 10% or more.

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Patent Owner(s)

Patent OwnerAddress
YKK CORPORATION1 KANDA IZUMI-CHO CHIYODA-KU TOKYO 101-8642

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasegawa, Itaru Kurobe, JP 5 12
Yarino, Kentaro Kurobe, JP 1 0

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