Toshio Kirihara

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Kokubunji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical distribution system having time switch
- Patent number 5,790,290
- Issue date Aug 4, 1998
- Hitachi, Ltd.
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical distribution device, optical distribution circuit, and synt...
- Patent number 5,576,872
- Issue date Nov 19, 1996
- Hitachi, Ltd.
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Self-routing optical switch and optical switch array
- Patent number 5,422,967
- Issue date Jun 6, 1995
- Hitachi, Ltd.
- Hiroaki Inoue
- G02 - OPTICS