Isao Tsuyama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Output control device and recording-medium-driver control device
- Patent number 7,599,140
- Issue date Oct 6, 2009
- Fujitsu Limited
- Isao Tsuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical apparatus for bidirectional optical communication
- Patent number 7,203,392
- Issue date Apr 10, 2007
- Fujitsu Limited
- Isao Tsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control method and device for optical filter
- Patent number 7,120,321
- Issue date Oct 10, 2006
- Fujitsu Limited
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Grant
Control method and control apparatus for variable wavelength optica...
- Patent number 6,947,630
- Issue date Sep 20, 2005
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control method and device for optical filter, and optical node device
- Patent number 6,895,141
- Issue date May 17, 2005
- Fujitsu Limited
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross-connect equipment
- Patent number 6,522,803
- Issue date Feb 18, 2003
- Fujitsu Limited
- Ichiro Nakajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical exchanger
- Patent number 6,496,289
- Issue date Dec 17, 2002
- Fujitsu Limited
- Satoshi Kuroyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength multiplexing system having a redundant configura...
- Patent number 6,433,900
- Issue date Aug 13, 2002
- Fujitsu Limited
- Satoshi Kuroyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross connect apparatus and optical network
- Patent number 6,404,940
- Issue date Jun 11, 2002
- Fujitsu Limited
- Isao Tsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch
- Patent number 6,154,583
- Issue date Nov 28, 2000
- Fujitsu Limited
- Satoshi Kuroyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
FREQUENCY CHARACTERISTIC ADJUSTING CIRCUIT, RECEIVING INTERFACE CIR...
- Publication number 20100091623
- Publication date Apr 15, 2010
- Fujitsu Limited
- Isao Tsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ACTIVE BAND-PASS FILTER AND MAGNETIC STORAGE DEVICE
- Publication number 20090309649
- Publication date Dec 17, 2009
- Fujitsu Limited
- Isao Tsuyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
THERMAL-ASSIST MAGNETIC RECORDING DEVICE AND THERMAL-ASSIST MAGNETI...
- Publication number 20090296256
- Publication date Dec 3, 2009
- Fujitsu Limited
- Isao TSUYAMA
- G11 - INFORMATION STORAGE
Information Patent Application
CONTROL CIRCUIT AND INFORMATION STORAGE DEVICE
- Publication number 20090257145
- Publication date Oct 15, 2009
- FUJITSU LIMITED
- Isao TSUYAMA
- G11 - INFORMATION STORAGE
Information Patent Application
FILTER CIRCUIT
- Publication number 20090108926
- Publication date Apr 30, 2009
- Fujitsu Limited
- Isao Tsuyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Output control device and recording-medium-driver control device
- Publication number 20070188904
- Publication date Aug 16, 2007
- FUJITSU LIMITED
- Isao Tsuyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Optical apparatus for bidirectional optical communication
- Publication number 20050111788
- Publication date May 26, 2005
- FUJITSU LIMITED
- Isao Tsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Control method and control apparatus for variable wavelength optica...
- Publication number 20030179988
- Publication date Sep 25, 2003
- FUJITSU LIMITED
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Control method and device for optical filter
- Publication number 20030123775
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Hideyuki Miyata
- G02 - OPTICS
Information Patent Application
Control method and device for optical filter, and optical node device
- Publication number 20030123789
- Publication date Jul 3, 2003
- FUJITSU LIMITED
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical exchanger
- Publication number 20030063347
- Publication date Apr 3, 2003
- FUJITSU LIMITED
- Satoshi Kuroyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switch network, optical cross connecting device, and optica...
- Publication number 20020015551
- Publication date Feb 7, 2002
- Isao Tsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Isao Tsuyama

Person

Patents Grantslast 30 patents

Output control device and recording-medium-driver control device

Optical apparatus for bidirectional optical communication

Control method and device for optical filter

Control method and control apparatus for variable wavelength optica...

Control method and device for optical filter, and optical node device

Optical cross-connect equipment

Optical exchanger

Optical wavelength multiplexing system having a redundant configura...

Optical cross connect apparatus and optical network

Optical switch

Patents Applicationslast 30 patents

FREQUENCY CHARACTERISTIC ADJUSTING CIRCUIT, RECEIVING INTERFACE CIR...

ACTIVE BAND-PASS FILTER AND MAGNETIC STORAGE DEVICE

THERMAL-ASSIST MAGNETIC RECORDING DEVICE AND THERMAL-ASSIST MAGNETI...

CONTROL CIRCUIT AND INFORMATION STORAGE DEVICE

FILTER CIRCUIT

Output control device and recording-medium-driver control device

Optical apparatus for bidirectional optical communication

Control method and control apparatus for variable wavelength optica...

Control method and device for optical filter

Control method and device for optical filter, and optical node device

Optical exchanger

Optical switch network, optical cross connecting device, and optica...