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Yoshifumi Kawakatsu
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Shizuoka, JP
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last 30 patents
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Patent Grant
Process for producing preoxidized fibers from acrylic fibers
Patent number
4,898,700
Issue date
Feb 6, 1990
Toho Rayon Co., Ltd.
Osamu Yoshinari
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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Patent Grant
Acrylic fibers for producing preoxidized fibers
Patent number
4,659,623
Issue date
Apr 21, 1987
Toho Beslon Co., Ltd.
Osamu Yoshinari
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process for producing carbon fiber or graphite fiber
Patent number
4,522,801
Issue date
Jun 11, 1985
Toho Beslon Co., Ltd.
Osamu Yoshinari
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING