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Toshiaki Kagawa
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Vertical-cavity surface-emitting semiconductor laser
Patent number
6,846,685
Issue date
Jan 25, 2005
Nippon Telegraph and Telephone Corporation
Hiroyuki Uenohara
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Vertical-cavity surface-emitting semiconductor laser
Patent number
6,549,553
Issue date
Apr 15, 2003
Nippon Telegraph and Telephone Corporation
Hiroyuki Uenohara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Avalanche photodiode with adjacent layers
Patent number
5,075,750
Issue date
Dec 24, 1991
Nippon Telegraph & Telephone Corporation
Toshiaki Kagawa
B82 - NANO-TECHNOLOGY
Patents Applications
last 30 patents
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Patent Application
Vertical-cavity surface-emitting semiconductor laser
Publication number
20030156613
Publication date
Aug 21, 2003
Hiroyuki Uenohara
H01 - BASIC ELECTRIC ELEMENTS