Ryoichi Yoshimura

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Refining agent of molten metal and methods for producing the same
- Patent number 4,435,210
- Issue date Mar 6, 1984
- Showa Denko Kabushiki Kaisha
- Norio Hirokawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Chromium-alloyed steel which is corrosion resistant to caustic alka...
- Patent number 4,252,561
- Issue date Feb 24, 1981
- Showa Denko Kabushiki Kaisha
- Tadao Hirano
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Lime bearing agent for use in refining of ferrous melt
- Patent number 4,225,348
- Issue date Sep 30, 1980
- Showa Denko Kabushiki Kaisha
- Ryoichi Yoshimura
- C21 - METALLURGY OF IRON