Steel sheet

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United States of America Patent

PATENT NO 11180835
APP PUB NO 20180274069A1
SERIAL NO

15757264

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A steel sheet has a predetermined chemical composition, and a surface exhibits an absorption peak at which a reflectance is not less than 50% nor more than 85% in a range of wave numbers of 1200 cm−1 to 1300 cm−1 by a Fourier transform-infrared spectroscopy analysis by a reflection absorption spectrometry method, and does not exhibit an absorption peak in a range of wave numbers of 1000 cm−1 to 1100 cm−1, or exhibits an absorption peak at which a reflectance is 85% or more in the range of wave numbers of 1000 cm−1 to 1100 cm−1, wherein Ni of 3 mg/m2 to 100 mg/m2 adheres to the surface.

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Patent Owner(s)

  • 501 NIPPON STEEL CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ban, Hiroyuki Tokyo, JP 71 939
Kawata, Hiroyuki Tokyo, JP 100 916
Kitazawa, Takayuki Tokyo, JP 40 463
Ueda, Kohei Tokyo, JP 43 162
Yasui, Takeshi Tokyo, JP 60 711

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