Kyouzou Tsujikawa

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Tsukuba-shi, Ibaraki-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Amplifying optical fiber and optical amplifier
- Patent number 9,515,450
- Issue date Dec 6, 2016
- Fujikura Ltd.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Grant
Amplifying optical fiber and optical amplifier
- Patent number 9,252,556
- Issue date Feb 2, 2016
- Fujikura Ltd.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Grant
Optical fiber having holes
- Patent number 9,121,995
- Issue date Sep 1, 2015
- Fujikura Ltd.
- Shoji Tanigawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER
- Publication number 20150318659
- Publication date Nov 5, 2015
- FUJIKURA LTD.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Application
AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER
- Publication number 20150318661
- Publication date Nov 5, 2015
- FUJIKURA LTD.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER
- Publication number 20120288247
- Publication date Nov 15, 2012
- Nippon Telegraph and Telephone Corporation
- Shoji TANIGAWA
- G02 - OPTICS