Takao Tadenuma

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water repellent and water repellent gypsum composition
- Patent number 5,098,943
- Issue date Mar 24, 1992
- Mitsubishi Kasei Corporation
- Toru Tagawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES