Yasuhiro Okajima

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Ichikawa, JA

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Patents Grantslast 30 patents

Information Patent Grant
Process for treating manganese nodules
- Patent number 4,029,498
- Issue date Jun 14, 1977
- Sumitomo Metal Mining Co., Limited
- Yasuhiro Okajima
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...