Yasushi Iijima

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic hardening material and method of manufacturing the same
- Patent number 4,981,519
- Issue date Jan 1, 1991
- Nippon Kokan Kabushiki Kaisha
- Kazuo Fukaya
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES