Tatsuyuki Oohashi

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Sakura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a preform for asymmetrical optical fiber
- Patent number 4,935,045
- Issue date Jun 19, 1990
- Fujikura Ltd.
- Ryozo Yamauchi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing a preform for asymmetrical optical fiber
- Patent number 4,834,786
- Issue date May 30, 1989
- Fujikura Ltd.
- Ryozo Yamauchi
- C03 - GLASS MINERAL OR SLAG WOOL