Katsushi Iwashita

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
AM/PM converter and optical signal transmission system
- Patent number 5,896,216
- Issue date Apr 20, 1999
- Nippon Telegraph & Telephone Corporation
- Koji Kikushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device for measuring optical frequency modulation characteristics
- Patent number 4,979,825
- Issue date Dec 25, 1990
- Nippon Telegraph & Telephone Corporation
- Katsushi Iwashita
- G02 - OPTICS