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Pitch fluoride
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Patent number 4,931,163
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Issue date Jun 5, 1990
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Osaka Gas Co, Ltd.
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Nobuatsu Watanabe
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Crystallizer
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Patent number 4,678,646
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Issue date Jul 7, 1987
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Solex Research Corporation of Japan
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Morio Watanabe
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Method for producing fluorine
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Patent number 4,312,718
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Issue date Jan 26, 1982
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Watanabe; Nobuatsu
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Nobuatsu Watanabe
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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