Seiji SUMI

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor optical device, optical transmitter module, optical t...
- Patent number 8,488,918
- Issue date Jul 16, 2013
- Oclaro Japan, Inc.
- Seiji Sumi
- 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
Optical module
- Patent number 7,011,458
- Issue date Mar 14, 2006
- OpNext Japan, Inc.
- Osamu Kagaya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SEMICONDUCTOR OPTICAL DEVICE, OPTICAL TRANSMITTER MODULE, OPTICAL T...
- Publication number 20120008895
- Publication date Jan 12, 2012
- OpNext Japan, Inc.
- Seiji SUMI
- G02 - OPTICS
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
OPTICAL MODULE
- Publication number 20060008194
- Publication date Jan 12, 2006
- Osamu Kagaya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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