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Hiroyuki Kamiyama
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Tokiwa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor optical receiver device, optical receiver module, and...
Patent number
7,875,905
Issue date
Jan 25, 2011
OpNext Japan, Inc.
Takashi Toyonaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing semiconductor laser for communication, semi...
Patent number
7,833,807
Issue date
Nov 16, 2010
OpNext Japan, Inc.
Hiroyuki Kamiyama
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Semiconductor electro-absorption optical modulator, semiconductor e...
Patent number
7,409,113
Issue date
Aug 5, 2008
OpNext Japan, Inc.
Seiji Sumi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Semiconductor optical amplifier and optical module using the same
Patent number
7,190,872
Issue date
Mar 13, 2007
OpNext Japan, Inc.
Hiroyuki Kamiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor optical amplifier, and optical module using the same
Patent number
7,127,145
Issue date
Oct 24, 2006
OpNext Japan, Inc.
Hiroyuki Kamiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
User authentication apparatus, controlling method thereof, and netw...
Patent number
7,065,341
Issue date
Jun 20, 2006
Telefonaktiebolaget LM Ericsson (publ)
Hiroyuki Kamiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Semiconductor optical receiver device, optical receiver module, and...
Publication number
20080265357
Publication date
Oct 30, 2008
Takashi Toyonaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of manufacturing semiconductor laser for communication, semi...
Publication number
20080089378
Publication date
Apr 17, 2008
Hiroyuki Kamiyama
B82 - NANO-TECHNOLOGY
Information
Patent Application
Optical device and optical module
Publication number
20070249109
Publication date
Oct 25, 2007
Hiroyuki Kamiyama
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Semiconductor optical amplifier and optical module using the same
Publication number
20060165363
Publication date
Jul 27, 2006
OpNext Japan, Inc.
Hiroyuki Kamiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor electro-absorption optical modulator, semiconductor e...
Publication number
20050275920
Publication date
Dec 15, 2005
Seiji Sumi
G02 - OPTICS
Information
Patent Application
Semiconductor optical amplifier, and optical module using the same
Publication number
20050025414
Publication date
Feb 3, 2005
OpNext Japan, Inc.
Hiroyuki Kamiyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
User authentication apparatus, controlling method thereof, and netw...
Publication number
20040064730
Publication date
Apr 1, 2004
Hiroyuki Kamiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for manufacturing avalanche photodiodes, avalanche photodiod...
Publication number
20040000675
Publication date
Jan 1, 2004
OpNext Japan, Inc.
Hiroyuki Kamiyama
H01 - BASIC ELECTRIC ELEMENTS