Masaki Koutoku

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Wave transmission medium and waveguide circuit
- Patent number 7,397,977
- Issue date Jul 8, 2008
- Nippon Telegraph and Telephone Corporation
- Toshikazu Hashimoto
- G02 - OPTICS
Information Patent Grant
Waveguide-type optical signal processing circuit
- Patent number 6,731,828
- Issue date May 4, 2004
- Nippon Telegraph and Telephone Corporation
- Tsutomu Kitou
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Wave transmission medium and waveguide circuit
- Publication number 20060126992
- Publication date Jun 15, 2006
- Toshikazu Hashimoto
- G02 - OPTICS
Information Patent Application
Waveguide-type optical signal processing circuit
- Publication number 20030012479
- Publication date Jan 16, 2003
- Nippon Telegraph and Telephone Corporation
- Tsutomu Kitou
- G02 - OPTICS