Shun-ichi Tohno

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical waveguide device for optical wiring and manufacturing metho...
- Patent number 6,496,624
- Issue date Dec 17, 2002
- Nippon Telegraph and Telephone Corporation
- Makoto Hikita
- G02 - OPTICS
Information Patent Grant
Manufacturing method for optical waveguide device
- Patent number 6,226,429
- Issue date May 1, 2001
- Nippon Telegraph and Telephone Corporation
- Makoto Hikita
- G02 - OPTICS