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Hidekazu Kato
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Funabashi-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
High purity gallium for preparation of compound semiconductor, and...
Patent number
6,533,838
Issue date
Mar 18, 2003
Dowa Mining Co., Ltd.
Takeharu Yamamura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Silver oxide for use in cells and a process for producing the same
Patent number
6,086,845
Issue date
Jul 11, 2000
Dowa Mining Co., Ltd.
Hidekazu Kato
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Silver oxide for use in cells and a process for producing the same
Patent number
6,030,600
Issue date
Feb 29, 2000
Dowa Mining Co., Ltd.
Hidekazu Kato
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
High purity gallium for producing compound semiconductor, refining...
Publication number
20020162419
Publication date
Nov 7, 2002
DOWA MINING CO., LTD.
Takeharu Yamamura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...