Yoshio Yasuda

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Bizen, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnesia-alumina type spinel clinker and method of producing refrac...
- Patent number 5,171,724
- Issue date Dec 15, 1992
- Shinagawa Refractories Co., Ltd.
- Hitoshi Iwadoh
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES