Takeo Okamura

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Bizen, JP

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Patents Grantslast 30 patents

Information Patent Grant
Injection material for use in blast furnace
- Patent number 5,000,427
- Issue date Mar 19, 1991
- Sumitomo Metal Industries, Ltd.
- Takeshi Iba
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Carbon-bonded magnesia carbon bricks
- Patent number 4,431,745
- Issue date Feb 14, 1984
- Kyushu Refractories Co., Ltd.
- Akira Watanabe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES