Michihisa Osawa

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Ichihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Novel expandable particles of a styrene polymer and process for pre...
- Patent number 4,238,570
- Issue date Dec 9, 1980
- Hitachi Chemical Company, Ltd.
- Hideaki Shibata
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...