Takeshi Kawai

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Yokosuka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical signal processing device with an array waveguide coupled to...
- Patent number 9,723,387
- Issue date Aug 1, 2017
- Nippon Telegraph and Telephone Corporation
- Kenya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal processing device
- Patent number 9,645,321
- Issue date May 9, 2017
- Nippon Telegraph and Telephone Corporation
- Yuichi Higuchi
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SIGNAL PROCESSING DEVICE
- Publication number 20150268421
- Publication date Sep 24, 2015
- Nippon Telegraph and Telephone Corporation
- Yuichi Higuchi
- G02 - OPTICS
Information Patent Application
OPTICAL SIGNAL PROCESSING APPARATUS
- Publication number 20150237420
- Publication date Aug 20, 2015
- Nippon Telegraph and Telephone Corporation
- Kenya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE