Kazuhisa Kawazumi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing flexible graphite
- Patent number 4,226,821
- Issue date Oct 7, 1980
- Nippon Carbon Co., Ltd.
- Toshikatsu Ishikawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES