Yutaka Kai

Person

Kawasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multi-carrier optical transmission system, optical transmitter, and...
- Patent number 10,027,408
- Issue date Jul 17, 2018
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter, optical communication system, and optical tran...
- Patent number 9,998,230
- Issue date Jun 12, 2018
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical reception apparatus
- Patent number 9,998,233
- Issue date Jun 12, 2018
- Fujitsu Limited
- Ryou Okabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiving device and method for controlling dispersion comp...
- Patent number 9,973,276
- Issue date May 15, 2018
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, controller for wavelength tunable filt...
- Patent number 9,876,601
- Issue date Jan 23, 2018
- Fujitsu Limited
- Toshiki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for determining numbers of bits allocated to subcarriers and...
- Patent number 9,853,728
- Issue date Dec 26, 2017
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multilevel intensity modulation and demodulation system and method
- Patent number 9,467,229
- Issue date Oct 11, 2016
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission apparatus, transmission system, and transmission method
- Patent number 9,425,897
- Issue date Aug 23, 2016
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmitting apparatus, receiving apparatus, optical frequency divi...
- Patent number 9,088,383
- Issue date Jul 21, 2015
- Fujitsu Limited
- Toshiki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system using cross phase modulation
- Patent number 9,077,470
- Issue date Jul 7, 2015
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 9,019,593
- Issue date Apr 28, 2015
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Level control circuit, level control method, and level control system
- Patent number 8,937,762
- Issue date Jan 20, 2015
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitting apparatus, optical receiving apparatus, and op...
- Patent number 8,867,927
- Issue date Oct 21, 2014
- Fujitsu Limited
- Yuichi Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical output level control apparatus
- Patent number 8,824,043
- Issue date Sep 2, 2014
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication network and supervisory control device
- Patent number 8,787,757
- Issue date Jul 22, 2014
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Waveform controller, responsive element module, optical switch appa...
- Patent number 8,582,984
- Issue date Nov 12, 2013
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access network system
- Patent number 8,538,259
- Issue date Sep 17, 2013
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Relay apparatus, signal processing apparatus and optical communicat...
- Patent number 8,463,135
- Issue date Jun 11, 2013
- Fujitsu Limited
- Kyosuke Sone
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical packet switching apparatus and optical packet switching method
- Patent number 8,331,780
- Issue date Dec 11, 2012
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication base station, optical signal conversion appar...
- Patent number 8,275,258
- Issue date Sep 25, 2012
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical-switch drive circuit and method thereof
- Patent number 8,179,593
- Issue date May 15, 2012
- Fujitsu Limited
- Masaji Noguchi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Optical switching device
- Patent number 8,170,416
- Issue date May 1, 2012
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical packet switching apparatus
- Patent number 8,155,517
- Issue date Apr 10, 2012
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Driving circuit of optical gate switch
- Patent number 8,139,903
- Issue date Mar 20, 2012
- Fujitsu Limited
- Masaji Noguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Drive circuit and optical switch
- Patent number 8,107,813
- Issue date Jan 31, 2012
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical add/drop device
- Patent number 8,032,028
- Issue date Oct 4, 2011
- Fujitsu Limited
- Yutaka Takita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical packet switching apparatus and method therefor
- Patent number 8,019,219
- Issue date Sep 13, 2011
- Fujitsu Limited
- Koji Matsunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Non-inverting amplifier circuit and optical switch driver circuit
- Patent number 7,898,341
- Issue date Mar 1, 2011
- Fujitsu Limited
- Tomohiro Ueno
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Driving circuit of optical gate switch
- Patent number 7,848,600
- Issue date Dec 7, 2010
- Fujitsu Limited
- Masaji Noguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network system and transmission apparatus
- Patent number 7,826,744
- Issue date Nov 2, 2010
- Fujitsu Limited
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LEARNING METHOD AND INFORMATION PROCESSING APPARATUS
- Publication number 20210406683
- Publication date Dec 30, 2021
- Fujitsu Limited
- YUTAKA KAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
LEARNING METHOD AND LEARNING APPARATUS
- Publication number 20210158212
- Publication date May 27, 2021
- Fujitsu Limited
- YUTAKA KAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
OPTICAL TRANSMITTER, OPTICAL COMMUNICATION SYSTEM, AND OPTICAL TRAN...
- Publication number 20180034551
- Publication date Feb 1, 2018
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVING DEVICE AND METHOD FOR CONTROLLING DISPERSION COMP...
- Publication number 20170272161
- Publication date Sep 21, 2017
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM, CONTROLLER FOR WAVELENGTH TUNABLE FILT...
- Publication number 20170093515
- Publication date Mar 30, 2017
- Fujitsu Limited
- Toshiki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR DETERMINING NUMBERS OF BITS ALLOCATED TO SUBCARRIERS AND...
- Publication number 20170070286
- Publication date Mar 9, 2017
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-CARRIER OPTICAL TRANSMISSION SYSTEM, OPTICAL TRANSMITTER, AND...
- Publication number 20160285548
- Publication date Sep 29, 2016
- Fujitsu Limited
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEPTION APPARATUS
- Publication number 20160218812
- Publication date Jul 28, 2016
- Fujitsu Limited
- Ryou Okabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTILEVEL INTENSITY MODULATION AND DEMODULATION SYSTEM AND METHOD
- Publication number 20150222359
- Publication date Aug 6, 2015
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION APPARATUS, TRANSMISSION SYSTEM, AND TRANSMISSION METHOD
- Publication number 20150104182
- Publication date Apr 16, 2015
- FUJITSU LIMITED
- Masato Nishihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMITTING APPARATUS, RECEIVING APPARATUS, OPTICAL FREQUENCY DIVI...
- Publication number 20140099115
- Publication date Apr 10, 2014
- Fujitsu Limited
- Toshiki TANAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL OUTPUT LEVEL CONTROL APPARATUS
- Publication number 20140078579
- Publication date Mar 20, 2014
- Fujitsu Limited
- Setsuo YOSHIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
APPARATUS AND METHOD FOR RECEIVING OPTICAL SIGNAL, AND OPTICAL FREQ...
- Publication number 20140064732
- Publication date Mar 6, 2014
- Fujitsu Limited
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM
- Publication number 20130266320
- Publication date Oct 10, 2013
- Fujitsu Limited
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL ACCESS NETWORK SYSTEM
- Publication number 20120315038
- Publication date Dec 13, 2012
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM
- Publication number 20120293228
- Publication date Nov 22, 2012
- Fujitsu Limited
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFICATION APPARATUS
- Publication number 20120257272
- Publication date Oct 11, 2012
- Fujitsu Limited
- Setsuo YOSHIDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OP...
- Publication number 20120082465
- Publication date Apr 5, 2012
- FUJITSU LIMITED
- Yuichi AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM
- Publication number 20110254608
- Publication date Oct 20, 2011
- FUJITSU LIMTED
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL COMMUNICATION NETWORK AND SUPERVISORY CONTROL DEVICE
- Publication number 20110116798
- Publication date May 19, 2011
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Driving circuit of optical gate switch
- Publication number 20110050293
- Publication date Mar 3, 2011
- FUJITSU LIMITED
- Masaji Noguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TEMPERATURE CONTROL METHOD, TEMPERATURE CONTROL APPARATUS, AND OPTI...
- Publication number 20110006124
- Publication date Jan 13, 2011
- Fujitsu Limited
- Yutaka KAI
- G05 - CONTROLLING REGULATING
Information Patent Application
RELAY APPARATUS, SIGNAL PROCESSING APPARATUS AND OPTICAL COMMUNICAT...
- Publication number 20100266293
- Publication date Oct 21, 2010
- FUJITSU LIMITED
- Kyosuke Sone
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WAVEFORM CONTROLLER, RESPONSIVE ELEMENT MODULE, OPTICAL SWITCH APPA...
- Publication number 20100123945
- Publication date May 20, 2010
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL PACKET SWITCHING APPARATUS
- Publication number 20100027992
- Publication date Feb 4, 2010
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Drive circuit and optical switch
- Publication number 20090297147
- Publication date Dec 3, 2009
- FUJITSU LIMITED
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communication base station, optical signal conversion appar...
- Publication number 20090297162
- Publication date Dec 3, 2009
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL-SWITCH DRIVE CIRCUIT AND METHOD THEREOF
- Publication number 20090237127
- Publication date Sep 24, 2009
- FUJITSU LIMITED
- Masaji NOGUCHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
OPTICAL PACKET SWITCHING APPARATUS AND OPTICAL PACKET SWITCHING METHOD
- Publication number 20090196607
- Publication date Aug 6, 2009
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical access network system
- Publication number 20090185804
- Publication date Jul 23, 2009
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Multi-carrier optical transmission system, optical transmitter, and...

Optical transmitter, optical communication system, and optical tran...

Optical reception apparatus

Optical receiving device and method for controlling dispersion comp...

Optical transmission system, controller for wavelength tunable filt...

Method for determining numbers of bits allocated to subcarriers and...

Multilevel intensity modulation and demodulation system and method

Transmission apparatus, transmission system, and transmission method

Transmitting apparatus, receiving apparatus, optical frequency divi...

Optical transmission system using cross phase modulation

Optical amplification apparatus

Level control circuit, level control method, and level control system

Optical transmitting apparatus, optical receiving apparatus, and op...

Optical output level control apparatus

Optical communication network and supervisory control device

Waveform controller, responsive element module, optical switch appa...

Optical access network system

Relay apparatus, signal processing apparatus and optical communicat...

Optical packet switching apparatus and optical packet switching method

Optical communication base station, optical signal conversion appar...

Optical-switch drive circuit and method thereof

Optical switching device

Optical packet switching apparatus

Driving circuit of optical gate switch

Drive circuit and optical switch

Optical add/drop device

Optical packet switching apparatus and method therefor

Non-inverting amplifier circuit and optical switch driver circuit

Driving circuit of optical gate switch

Optical network system and transmission apparatus

Patents Applicationslast 30 patents

LEARNING METHOD AND INFORMATION PROCESSING APPARATUS

LEARNING METHOD AND LEARNING APPARATUS

OPTICAL TRANSMITTER, OPTICAL COMMUNICATION SYSTEM, AND OPTICAL TRAN...

OPTICAL RECEIVING DEVICE AND METHOD FOR CONTROLLING DISPERSION COMP...

OPTICAL TRANSMISSION SYSTEM, CONTROLLER FOR WAVELENGTH TUNABLE FILT...

METHOD FOR DETERMINING NUMBERS OF BITS ALLOCATED TO SUBCARRIERS AND...

MULTI-CARRIER OPTICAL TRANSMISSION SYSTEM, OPTICAL TRANSMITTER, AND...

OPTICAL RECEPTION APPARATUS

MULTILEVEL INTENSITY MODULATION AND DEMODULATION SYSTEM AND METHOD

TRANSMISSION APPARATUS, TRANSMISSION SYSTEM, AND TRANSMISSION METHOD

TRANSMITTING APPARATUS, RECEIVING APPARATUS, OPTICAL FREQUENCY DIVI...

OPTICAL OUTPUT LEVEL CONTROL APPARATUS

APPARATUS AND METHOD FOR RECEIVING OPTICAL SIGNAL, AND OPTICAL FREQ...

OPTICAL TRANSMISSION SYSTEM

OPTICAL ACCESS NETWORK SYSTEM

LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM

OPTICAL AMPLIFICATION APPARATUS

OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OP...

LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM

OPTICAL COMMUNICATION NETWORK AND SUPERVISORY CONTROL DEVICE

Driving circuit of optical gate switch

TEMPERATURE CONTROL METHOD, TEMPERATURE CONTROL APPARATUS, AND OPTI...

RELAY APPARATUS, SIGNAL PROCESSING APPARATUS AND OPTICAL COMMUNICAT...

WAVEFORM CONTROLLER, RESPONSIVE ELEMENT MODULE, OPTICAL SWITCH APPA...

OPTICAL PACKET SWITCHING APPARATUS

Drive circuit and optical switch

Optical communication base station, optical signal conversion appar...

OPTICAL-SWITCH DRIVE CIRCUIT AND METHOD THEREOF

OPTICAL PACKET SWITCHING APPARATUS AND OPTICAL PACKET SWITCHING METHOD

Optical access network system