Masashi Harakawa

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Niihama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing inorganic fiber
- Patent number 4,961,889
- Issue date Oct 9, 1990
- Sumitomo Chemical Company, Limited
- Hidekimi Kadokura
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING