Nobuhiro Ishida

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Yokohama, JA

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Patents Grantslast 30 patents

Information Patent Grant
Pencil lead and manufacturing method of the same
- Patent number 4,017,451
- Issue date Apr 12, 1977
- Mitsubishi Chemical Industries Ltd.
- Nobuhiro Ishida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...