Kenro Sekine

Person

Fuchu, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transport system and optical node
- Patent number 8,818,190
- Issue date Aug 26, 2014
- Hitachi, Ltd.
- Yukio Hayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quaternary phase modulator
- Patent number 8,095,018
- Issue date Jan 10, 2012
- Hitachi, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data transmission system and transmission code generating method fo...
- Patent number 8,090,269
- Issue date Jan 3, 2012
- Hitachi, Ltd.
- Hidehiro Toyoda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical prism and optical transceiver module for optical communicat...
- Patent number 7,991,290
- Issue date Aug 2, 2011
- Hitachi, Ltd.
- Ken'ichi Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical add-drop multiplexer
- Patent number 7,903,975
- Issue date Mar 8, 2011
- Hitachi, Ltd.
- Shinya Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplex (WDM) transmission system
- Patent number 7,653,310
- Issue date Jan 26, 2010
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength add-drop multiplexer
- Patent number 7,653,311
- Issue date Jan 26, 2010
- Hitachi Communication Technologies, Ltd.
- Nobuhiko Kikuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission equipment preventing malfunction in recovery f...
- Patent number 7,526,199
- Issue date Apr 28, 2009
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion compensator, optical transmission system and optical tra...
- Patent number 7,457,494
- Issue date Nov 25, 2008
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access network system
- Patent number 7,457,542
- Issue date Nov 25, 2008
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gain tilt compensators and their systems
- Patent number 7,302,183
- Issue date Nov 27, 2007
- Hitachi, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSPORT SYSTEM AND OPTICAL NODE
- Publication number 20120219289
- Publication date Aug 30, 2012
- Hitachi, Ltd.
- YUKIO HAYASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER
- Publication number 20110229153
- Publication date Sep 22, 2011
- Hitachi, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL REPEATER, OPTICAL TRANSMISSION APPARATUS, REFLECTION ABNORM...
- Publication number 20110164873
- Publication date Jul 7, 2011
- Hitachi, Ltd.
- YUKIO HAYASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Quaternary phase modulator
- Publication number 20090092401
- Publication date Apr 9, 2009
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Data transmission system and transmission code generating method fo...
- Publication number 20080240729
- Publication date Oct 2, 2008
- Hitachi, Ltd.
- Hidehiro Toyoda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DISPERSION COMPENSATOR, OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRA...
- Publication number 20080151377
- Publication date Jun 26, 2008
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength division multiplex (WDM) transmission system
- Publication number 20070177877
- Publication date Aug 2, 2007
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical prism and optical transceiver module for optical communicat...
- Publication number 20070146881
- Publication date Jun 28, 2007
- Hitachi Communication Technologies, Ltd.
- Ken'ichi Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical access network system
- Publication number 20060280502
- Publication date Dec 14, 2006
- Hitachi Communication Technologies, Ltd.
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission equipment preventing mulfunction in recovery f...
- Publication number 20060018659
- Publication date Jan 26, 2006
- Kenro Sekine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical wavelength add-drop multiplexer
- Publication number 20050226621
- Publication date Oct 13, 2005
- Hitachi Communication Technologies, Ltd.
- Nobuhiko Kikuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical add-drop multiplexer
- Publication number 20050175041
- Publication date Aug 11, 2005
- Hitachi Communication Technologies, Ltd.
- Shinya Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Kenro Sekine

Person

Patents Grantslast 30 patents

Optical transport system and optical node

Quaternary phase modulator

Data transmission system and transmission code generating method fo...

Optical prism and optical transceiver module for optical communicat...

Optical add-drop multiplexer

Wavelength division multiplex (WDM) transmission system

Optical wavelength add-drop multiplexer

Optical transmission equipment preventing malfunction in recovery f...

Dispersion compensator, optical transmission system and optical tra...

Optical access network system

Gain tilt compensators and their systems

Patents Applicationslast 30 patents

OPTICAL TRANSPORT SYSTEM AND OPTICAL NODE

OPTICAL RECEIVER

OPTICAL REPEATER, OPTICAL TRANSMISSION APPARATUS, REFLECTION ABNORM...

Quaternary phase modulator

Data transmission system and transmission code generating method fo...

DISPERSION COMPENSATOR, OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRA...

Wavelength division multiplex (WDM) transmission system

Optical prism and optical transceiver module for optical communicat...

Optical access network system

Optical transmission equipment preventing mulfunction in recovery f...

Optical wavelength add-drop multiplexer

Optical add-drop multiplexer