Kouzou Hirokawa

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Shimodate, JP

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Patents Grantslast 30 patents

Information Patent Grant
Epoxy resin composition for sealing photosemiconductor element and...
- Patent number 5,641,840
- Issue date Jun 24, 1997
- Hitachi Chemical Company, Ltd.
- Satoru Tsuchida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...