Toshihiko Amaya

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cement dispersant and concrete composition containing the dispersant
- Patent number 6,680,348
- Issue date Jan 20, 2004
- Sika Ltd.
- Toshihiko Amaya
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...