Hiroshi Morijiri

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Ichihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing pitch for the manufacture of high-performance...
- Patent number 4,925,547
- Issue date May 15, 1990
- Maruzen Petrochemical Co., Ltd.
- Masatoshi Tsuchitani
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING