Tetsuro Shigei

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing graphite fiber
- Patent number 5,167,945
- Issue date Dec 1, 1992
- Toho Rayon Co., Ltd.
- Hiroyasu Ogawa
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Process for the surface treatment of carbon fiber strands
- Patent number 5,078,840
- Issue date Jan 7, 1992
- Toho Rayon Co., Ltd.
- Hiroyasu Ogawa
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Precursor for production of preoxidized fibers or carbon fibers
- Patent number 4,830,845
- Issue date May 16, 1989
- Toho Belson Co., Ltd.
- Hiroyasu Ogawa
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
High-strength carbonaceous fiber
- Patent number 4,671,950
- Issue date Jun 9, 1987
- Toho Beslon Co., Ltd.
- Hiroyasu Ogawa
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Preoxidized fiber and process for producing the same
- Patent number 4,536,448
- Issue date Aug 20, 1985
- Hiroyasu Ogawa
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Surface-treatment of carbon fiber
- Patent number 4,401,533
- Issue date Aug 30, 1983
- Toho Belson Co., Ltd.
- Kazuhisa Saito
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR