Junichi Ishikawa

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Konan, JP

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Patents Grantslast 30 patents

Information Patent Grant
High strength porcelains for use in insulators and production thereof
- Patent number 4,983,556
- Issue date Jan 8, 1991
- NGK Insulators, Ltd.
- Shoji Seike
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES