Kouichi Takahashi

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Yamanashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Glass substrate, magnetic recording medium and method of manufactur...
- Patent number 6,217,980
- Issue date Apr 17, 2001
- Hoya Corporation
- Kouichi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having a glass substrate and method of ma...
- Patent number 6,096,405
- Issue date Aug 1, 2000
- Hoya Corporation
- Kouichi Takahashi
- G11 - INFORMATION STORAGE