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Scale inhibitor
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Patent number 4,814,406
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Issue date Mar 21, 1989
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Katayama Chemical Works Ltd.
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Sakae Katayama
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Corrosion inhibitor
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Patent number 4,512,552
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Issue date Apr 23, 1985
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Katayama Chemical Works Co., Ltd.
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Sakae Katayama
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Scale inhibiting agent
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Patent number 4,432,884
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Issue date Feb 21, 1984
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Katayama Chemical Works Co., Ltd.
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Yoshinari Kawasaki
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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