Yuzo Tokumaru

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method of splicing polarization-maintaining optical f...
- Patent number 5,611,015
- Issue date Mar 11, 1997
- Sumitomo Electric Industries, Ltd.
- Yuzo Tokumaru
- G02 - OPTICS
Information Patent Grant
Optical fiber clamp for holding a plurality of optical fibers of va...
- Patent number 5,323,481
- Issue date Jun 21, 1994
- Sumitomo Electric Industries, Ltd.
- Yuzo Tokumaru
- G02 - OPTICS
Information Patent Grant
Cable connecting box
- Patent number 4,914,261
- Issue date Apr 3, 1990
- Sumitomo Electric Industries, Ltd.
- Yuzo Tokumaru
- G02 - OPTICS
Information Patent Grant
Method and apparatus for connecting optical fibers
- Patent number 4,812,008
- Issue date Mar 14, 1989
- Sumitomo Electric Industries, Ltd.
- Yuzo Tokumaru
- G02 - OPTICS
Information Patent Grant
Cable closure
- Patent number 4,720,605
- Issue date Jan 19, 1988
- Sumitomo Electric Industries, Ltd.
- Yuzo Tokumaru
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER