Makoto Shibutani

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Interference cancellation device and interference cancellation method
- Patent number 9,819,415
- Issue date Nov 14, 2017
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Coherent optical receiver and optical receiving method
- Patent number 9,419,724
- Issue date Aug 16, 2016
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and optical transmission method
- Patent number 9,124,372
- Issue date Sep 1, 2015
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Coherent optical receiver and coherent optical receiving method
- Patent number 8,989,603
- Issue date Mar 24, 2015
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for providing wireless over a passive optical net...
- Patent number 8,098,990
- Issue date Jan 17, 2012
- NEC Laboratories America, Inc.
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system, spanning tree configuration method, spanning tree c...
- Patent number 7,894,374
- Issue date Feb 22, 2011
- NEC Corporation
- Nobuyuki Enomoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system, spanning tree configuration method, spanning tree c...
- Patent number 7,855,981
- Issue date Dec 21, 2010
- NEC Corporation
- Nobuyuki Enomoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frame transfer method and node in Ethernet
- Patent number 7,783,705
- Issue date Aug 24, 2010
- NEC Corporation
- Youichi Hidaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system including several communication terminals and...
- Patent number 7,646,789
- Issue date Jan 12, 2010
- NEC Corporation
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system capable of efficiently transmitting data from...
- Patent number 7,200,155
- Issue date Apr 3, 2007
- NEC Corporation
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network
- Patent number 5,847,852
- Issue date Dec 8, 1998
- NEC Corporation
- Wataru Domon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network
- Patent number 5,771,111
- Issue date Jun 23, 1998
- NEC Corporation
- Wataru Domon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and optical network terminals used therein
- Patent number 5,751,455
- Issue date May 12, 1998
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter for subcarrier frequency multiplexed optical tr...
- Patent number 5,570,219
- Issue date Oct 29, 1996
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical module for subcarrier multiplexed optical transmission system
- Patent number 5,504,826
- Issue date Apr 2, 1996
- NEC Corporation
- Makoto Shibutani
- G02 - OPTICS
Information Patent Grant
Mobile communication system
- Patent number 5,400,391
- Issue date Mar 21, 1995
- NEC Corporation
- Katsumi Emura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resonance-type optical receiver circuit having a maximum amplifier...
- Patent number 5,373,152
- Issue date Dec 13, 1994
- NEC Corporation
- Wataru Domon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resonance-type optical receiver circuit and method of receiving lig...
- Patent number 5,371,354
- Issue date Dec 6, 1994
- NEC Corporation
- Wataru Domon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resonance-type optical receiver and receiving method for low-freque...
- Patent number 5,367,156
- Issue date Nov 22, 1994
- NEC Corporation
- Wataru Domon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization deversity heterodyne receiver of a baseband combining...
- Patent number 5,138,476
- Issue date Aug 11, 1992
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency stabilization of a laser beam by using a birefrigent body
- Patent number 5,107,512
- Issue date Apr 21, 1992
- NEC Coproration
- Makoto Shibutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Polarization diversity optical heterodyne receiver with phase adjus...
- Patent number 5,023,946
- Issue date Jun 11, 1991
- NEC Corporation
- Shuntaro Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization diversity receiver having little deteriorated sensitiv...
- Patent number 4,972,515
- Issue date Nov 20, 1990
- NEC Corporation
- Makoto Shibutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
INTERFERENCE CANCELLATION DEVICE AND INTERFERENCE CANCELLATION METHOD
- Publication number 20170085321
- Publication date Mar 23, 2017
- NEC Corporation
- Makoto SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL RECEPTION DEVICE
- Publication number 20150244467
- Publication date Aug 27, 2015
- NEC Corporation
- Makoto SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COHERENT OPTICAL RECEIVER AND OPTICAL RECEIVING METHOD
- Publication number 20140270809
- Publication date Sep 18, 2014
- MAKOTO SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION METHOD
- Publication number 20140112664
- Publication date Apr 24, 2014
- NEC Corporation
- Makoto SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COHERENT OPTICAL RECEIVER AND COHERENT OPTICAL RECEIVING METHOD
- Publication number 20130084080
- Publication date Apr 4, 2013
- NEC Corporation
- Makoto SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Transponder Aggregator Without Wavelength Selector for Colorless an...
- Publication number 20110286746
- Publication date Nov 24, 2011
- NEC Laboratories America, Inc.
- Philip Nan Ji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Phase Modulation Of An Optical Orthogonal Frequency Division Multip...
- Publication number 20100027994
- Publication date Feb 4, 2010
- NEC Laboratories America, Inc.
- Lei Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM
- Publication number 20090022498
- Publication date Jan 22, 2009
- MAKOTO SHIBUTANI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network system, spanning tree configuration method, spanning tree c...
- Publication number 20080159174
- Publication date Jul 3, 2008
- NEC Corporation
- Nobuyuki Enomoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR PROVIDING WIRELESS OVER A PASSIVE OPTICAL NET...
- Publication number 20080063397
- Publication date Mar 13, 2008
- JUNQIANG Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system capable of efficiently transmitting data from...
- Publication number 20040093422
- Publication date May 13, 2004
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frame transfer method and node in network, and frame transfer program
- Publication number 20040047353
- Publication date Mar 11, 2004
- NEC Corporation
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network system, spanning tree configuration method, spanning tree c...
- Publication number 20040047300
- Publication date Mar 11, 2004
- NEC Corporation
- Nobuyuki Enomoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frame transfer method and node in Ethernet
- Publication number 20040039832
- Publication date Feb 26, 2004
- NEC Corporation
- Youichi Hidaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system, communication terminal, server and data trans...
- Publication number 20030142626
- Publication date Jul 31, 2003
- NEC Corporation
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system including several communication terminals and...
- Publication number 20030142693
- Publication date Jul 31, 2003
- NEC Corporation
- Masaki Umayabashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multiplexing transmission system and its data transfer method
- Publication number 20030043857
- Publication date Mar 6, 2003
- NEC Corporation
- Kazuo Takagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Makoto Shibutani

Person

Patents Grantslast 30 patents

Interference cancellation device and interference cancellation method

Coherent optical receiver and optical receiving method

Optical transmission system and optical transmission method

Coherent optical receiver and coherent optical receiving method

System and method for providing wireless over a passive optical net...

Network system, spanning tree configuration method, spanning tree c...

Network system, spanning tree configuration method, spanning tree c...

Frame transfer method and node in Ethernet

Communication system including several communication terminals and...

Communication system capable of efficiently transmitting data from...

Optical network

Optical network

Optical transmission system and optical network terminals used therein

Optical transmitter for subcarrier frequency multiplexed optical tr...

Optical module for subcarrier multiplexed optical transmission system

Mobile communication system

Resonance-type optical receiver circuit having a maximum amplifier...

Resonance-type optical receiver circuit and method of receiving lig...

Resonance-type optical receiver and receiving method for low-freque...

Polarization deversity heterodyne receiver of a baseband combining...

Frequency stabilization of a laser beam by using a birefrigent body

Polarization diversity optical heterodyne receiver with phase adjus...

Polarization diversity receiver having little deteriorated sensitiv...

Patents Applicationslast 30 patents

INTERFERENCE CANCELLATION DEVICE AND INTERFERENCE CANCELLATION METHOD

OPTICAL TRANSMISSION DEVICE AND OPTICAL RECEPTION DEVICE

COHERENT OPTICAL RECEIVER AND OPTICAL RECEIVING METHOD

OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION METHOD

COHERENT OPTICAL RECEIVER AND COHERENT OPTICAL RECEIVING METHOD

Transponder Aggregator Without Wavelength Selector for Colorless an...

Phase Modulation Of An Optical Orthogonal Frequency Division Multip...

OPTICAL TRANSMISSION SYSTEM

Network system, spanning tree configuration method, spanning tree c...

SYSTEM AND METHOD FOR PROVIDING WIRELESS OVER A PASSIVE OPTICAL NET...

Communication system capable of efficiently transmitting data from...

Frame transfer method and node in network, and frame transfer program

Network system, spanning tree configuration method, spanning tree c...

Frame transfer method and node in Ethernet

Communication system, communication terminal, server and data trans...

Communication system including several communication terminals and...

Multiplexing transmission system and its data transfer method