Keiji Kouzai

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Iwakuni, JA

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing wholly aromatic polyamide fibers
- Patent number 4,073,837
- Issue date Feb 14, 1978
- Teitin Limited
- Keiji Kouzai
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING