Ryohsuke Sako

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Kanagawa, JP

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Patents Grantslast 30 patents

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Metal surface hydrophilicizing process and composition
- Patent number 4,954,372
- Issue date Sep 4, 1990
- Nihon Parkerizing Co., Ltd.
- Ryohsuke Sako
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...