Katsuhiko Yamamoto

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Chiba-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hardening composition, hardened product, and method of producing ha...
- Patent number 5,897,703
- Issue date Apr 27, 1999
- Tokyo Chemical Co., Ltd
- Yuji Hatakeyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES