Zenzaburo Kawai

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Kumagaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing white cement clinker
- Patent number 4,717,337
- Issue date Jan 5, 1988
- Kabushiki Kaisha
- Toshikazu Ichiyanagi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method and apparatus for producing white cement clinker
- Patent number 4,573,908
- Issue date Mar 4, 1986
- Chichibu Cement Kabushiki Kaisha
- Toshikazu Ichiyanagi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES