Yukinori Ishida

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Mito, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber cable
- Patent number 4,966,434
- Issue date Oct 30, 1990
- Sumitomo Electric Industries, Ltd.
- Shinichi Yonechi
- G02 - OPTICS
Information Patent Grant
Optical fiber cable and process for production thereof
- Patent number 4,491,386
- Issue date Jan 1, 1985
- Nippon Telegraph & Telephone Public Corporation
- Yukiyasu Negishi
- G02 - OPTICS
Information Patent Grant
Optical fiber for communication
- Patent number 4,114,981
- Issue date Sep 19, 1978
- Nippon Telegraph and Telephone Public Corporation
- Yukinori Ishida
- G02 - OPTICS