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Toshinori Katayama
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Kitakyusyushi, JP
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last 30 patents
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Patent Grant
Chromate surface treated steel sheet
Patent number
4,842,958
Issue date
Jun 27, 1989
Nippon Steel Corporation
Seijun Higuchi
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Patent Grant
Tinned steel sheet having a high degree of corrosion resistance and...
Patent number
4,731,301
Issue date
Mar 15, 1988
Nippon Steel Corporation
Seijun Higuchi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...