Yoshiyuki Doken

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Patents Grantslast 30 patents

Information Patent Grant
Pitch fiber bundle and pitch type carbon fiber bundle and method fo...
- Patent number 6,524,501
- Issue date Feb 25, 2003
- Nippon Steel Corporation
- Yutaka Arai
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Pitch fiber bundle and pitch type carbon fiber bundle and method fo...
- Patent number 6,187,434
- Issue date Feb 13, 2001
- Nippon Steel Corporation
- Yutaka Arai
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Process for manufacturing pitch-type carbon fiber
- Patent number 5,968,435
- Issue date Oct 19, 1999
- Nippon Steel Corporation
- Osamu Kato
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING