Ryotatsu Ootsuka

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of treating molten aluminum by removing hydrogen gas and non...
- Patent number 4,670,050
- Issue date Jun 2, 1987
- Showa Aluminum Corporation
- Ryotatsu Ootsuka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process of preparing aluminum of high purity
- Patent number 4,373,950
- Issue date Feb 15, 1983
- Showa Aluminium Kabushiki Kaisha
- Hideo Shingu
- B22 - CASTING POWDER METALLURGY