Hiroyuki Tsuda

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Machida, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,456,760
- Issue date Sep 24, 2002
- Nippon Telegraph and Telephone Corporation
- Takashi Kurokawa
- G02 - OPTICS
Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,122,419
- Issue date Sep 19, 2000
- Nippon Telegraph & Telephone Corporation
- Takashi Kurokawa
- G02 - OPTICS
Information Patent Grant
Liquid crystal Fabry-Perot etalon with glass spacer
- Patent number 5,321,539
- Issue date Jun 14, 1994
- Nippon Telegraph & Telephone Corporation
- Katsuhiko Hirabayashi
- G02 - OPTICS
Information Patent Grant
All-optical switch apparatus using a nonlinear etalon
- Patent number 5,076,672
- Issue date Dec 31, 1991
- Nippon Telegraph & Telephone Corporation
- Hiroyuki Tsuda
- G02 - OPTICS