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Akio Yoshida
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Iwaki, JP
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last 30 patents
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Patent Grant
Carbonaceous cylindrical body and process for producing the same
Patent number
4,917,923
Issue date
Apr 17, 1990
Kureha Kagaku Kogyo Kabushiki Kaishi
Akio Yoshida
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Patent Grant
Process for producing a carbonaceous thin plate
Patent number
4,822,538
Issue date
Apr 18, 1989
Kureha Kagaku Kogyo Kabushiki Kaisha
Akio Yoshida
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR