Tomoharu Niitsu

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical waveguide and arrayed waveguide grating
- Patent number 10,054,738
- Issue date Aug 21, 2018
- NTT Electronics Corporation
- Keiichi Morita
- G02 - OPTICS
Information Patent Grant
Optical waveguide and arrayed waveguide grating
- Patent number 9,618,694
- Issue date Apr 11, 2017
- NTT Electronics Corporation
- Keiichi Morita
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL WAVEGUIDE AND ARRAYED WAVEGUIDE GRATING
- Publication number 20170160471
- Publication date Jun 8, 2017
- NTT Electronics Corporation
- Keiichi Morita
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE AND ARRAYED WAVEGUIDE GRATING
- Publication number 20130058608
- Publication date Mar 7, 2013
- NTT ELECTRONICS CORPORATION
- Keiichi Morita
- G02 - OPTICS