Junya Kosaka

Person

Tokyo, JP

People

Patents Grantslast 30 patents

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
Filter with variable transmission character, optical transmission e...
- Patent number 6,867,909
- Issue date Mar 15, 2005
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 6,859,308
- Issue date Feb 22, 2005
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 6,839,161
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission equipment and supervisory system thereof
- Patent number 6,839,164
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system employi...
- Patent number 6,836,587
- Issue date Dec 28, 2004
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, optical transmission equipment, optical transmis...
- Patent number 6,829,408
- Issue date Dec 7, 2004
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and optical coupler/branching filter
- Patent number 6,771,854
- Issue date Aug 3, 2004
- Hitachi, Ltd.
- Tadashi Matsuoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, optical transmission equipment, optical transmis...
- Patent number 6,674,938
- Issue date Jan 6, 2004
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system employi...
- Patent number 6,671,431
- Issue date Dec 30, 2003
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 6,671,084
- Issue date Dec 30, 2003
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Filter with variable transmission character, optical transmission e...
- Patent number 6,580,550
- Issue date Jun 17, 2003
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for monitoring and controlling gain tilt in an...
- Patent number 6,577,438
- Issue date Jun 10, 2003
- Hitachi, Ltd.
- Toshiki Sugawara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmission system and optical coupler/branching filter
- Patent number 6,563,978
- Issue date May 13, 2003
- Hitachi, Ltd.
- Tadashi Matsuoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier and optical transmission system using the same
- Patent number 6,532,103
- Issue date Mar 11, 2003
- Hitachi, Ltd.
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 6,525,871
- Issue date Feb 25, 2003
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, optical transmission equipment, optical transmis...
- Patent number 6,496,617
- Issue date Dec 17, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system employi...
- Patent number 6,490,387
- Issue date Dec 3, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
OPTICAL AMPLIFIER, METHOD OF CONTROLLING THE OUTPUT LIGHT FROM THE...
- Patent number 6,483,630
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier apparatus and control method thereof, and optical...
- Patent number 6,459,527
- Issue date Oct 1, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier and optical transmission system using the same
- Patent number 6,433,925
- Issue date Aug 13, 2002
- Hitachi, Ltd.
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and optical communications device
- Patent number 6,400,475
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 6,373,622
- Issue date Apr 16, 2002
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, optical transmission equipment, optical transmis...
- Patent number 6,321,002
- Issue date Nov 20, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system employi...
- Patent number 6,314,217
- Issue date Nov 6, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light amplification medium control method, light amplification appa...
- Patent number 6,297,902
- Issue date Oct 2, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier unit control methods, optical amplifier systems a...
- Patent number 6,262,835
- Issue date Jul 17, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 6,256,141
- Issue date Jul 3, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier unit control methods, optical amplifier systems a...
- Patent number 6,233,091
- Issue date May 15, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier, optical transmission equipment, optical transmis...
- Patent number 6,229,936
- Issue date May 8, 2001
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PHOTOSENSITIVE RESIN MULTILAYER BODY
- Publication number 20230375930
- Publication date Nov 23, 2023
- Asahi Kasei Kabushiki Kaisha
- Shinichi KUNIMATSU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PHOTOSENSITIVE RESIN COMPOSITION AND PHOTOSENSITIVE RESIN MULTILAYE...
- Publication number 20220390843
- Publication date Dec 8, 2022
- Asahi Kasei Kabushiki Kaisha
- Tonami TAJIRI
- H01 - BASIC ELECTRIC ELEMENTS
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 network system construction method and support system
- Publication number 20050036788
- Publication date Feb 17, 2005
- Tadashi Matsuoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system and optical coupler/branching filter
- Publication number 20040197100
- Publication date Oct 7, 2004
- Hitachi, Ltd
- Tadashi Matsuoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier
- Publication number 20040120027
- Publication date Jun 24, 2004
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier, optical transmission equipment, optical transmis...
- Publication number 20040086246
- Publication date May 6, 2004
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission device and optical transmission system employi...
- Publication number 20040042713
- Publication date Mar 4, 2004
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system and optical coupler/branching filter
- Publication number 20030206692
- Publication date Nov 6, 2003
- Hitachi, Ltd
- Tadashi Matsuoka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Filter with variable transmission character, optical transmission e...
- Publication number 20030193714
- Publication date Oct 16, 2003
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplification apparatus
- Publication number 20030142391
- Publication date Jul 31, 2003
- Hitachi, Ltd.
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier
- Publication number 20030067673
- Publication date Apr 10, 2003
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical transmission device and optical transmission system employi...
- Publication number 20030044113
- Publication date Mar 6, 2003
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier, optical transmission equipment, optical transmis...
- Publication number 20030007726
- Publication date Jan 9, 2003
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier and monitoring method of optical amplifier
- Publication number 20020141044
- Publication date Oct 3, 2002
- Toshiki Sugawara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplification apparatus
- Publication number 20020141042
- Publication date Oct 3, 2002
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier, optical transmission equipment, optical transmis...
- Publication number 20020076159
- Publication date Jun 20, 2002
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplification apparatus
- Publication number 20020024724
- Publication date Feb 28, 2002
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical transmission device and optical transmission system employi...
- Publication number 20020012497
- Publication date Jan 31, 2002
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission equipment and supervisory system thereof
- Publication number 20010030797
- Publication date Oct 18, 2001
- Junya Kosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system and optical coupler/branching filter
- Publication number 20010024544
- Publication date Sep 27, 2001
- Tadashi Matsuoka
- G02 - OPTICS
Information Patent Application
Optical amplifier, method of controlling the output light from the...
- Publication number 20010022683
- Publication date Sep 20, 2001
- Junya Kosaka
- H01 - BASIC ELECTRIC ELEMENTS

Junya Kosaka

Person

Patents Grantslast 30 patents

Optical transmission equipment preventing malfunction in recovery f...

Filter with variable transmission character, optical transmission e...

Optical amplifier

Optical amplification apparatus

Optical transmission equipment and supervisory system thereof

Optical transmission device and optical transmission system employi...

Optical amplifier, optical transmission equipment, optical transmis...

Optical transmission system and optical coupler/branching filter

Optical amplifier, optical transmission equipment, optical transmis...

Optical transmission device and optical transmission system employi...

Optical amplifier

Filter with variable transmission character, optical transmission e...

Method and apparatus for monitoring and controlling gain tilt in an...

Optical transmission system and optical coupler/branching filter

Optical fiber amplifier and optical transmission system using the same

Optical amplification apparatus

Optical amplifier, optical transmission equipment, optical transmis...

Optical transmission device and optical transmission system employi...

OPTICAL AMPLIFIER, METHOD OF CONTROLLING THE OUTPUT LIGHT FROM THE...

Optical amplifier apparatus and control method thereof, and optical...

Optical fiber amplifier and optical transmission system using the same

Optical transmission system and optical communications device

Optical amplification apparatus

Optical amplifier, optical transmission equipment, optical transmis...

Optical transmission device and optical transmission system employi...

Light amplification medium control method, light amplification appa...

Optical amplifier unit control methods, optical amplifier systems a...

Optical amplification apparatus

Optical amplifier unit control methods, optical amplifier systems a...

Optical amplifier, optical transmission equipment, optical transmis...

Patents Applicationslast 30 patents

PHOTOSENSITIVE RESIN MULTILAYER BODY

PHOTOSENSITIVE RESIN COMPOSITION AND PHOTOSENSITIVE RESIN MULTILAYE...

Optical transmission equipment preventing mulfunction in recovery f...

Optical network system construction method and support system

Optical transmission system and optical coupler/branching filter

Optical amplifier

Optical amplifier, optical transmission equipment, optical transmis...

Optical transmission device and optical transmission system employi...

Optical transmission system and optical coupler/branching filter

Filter with variable transmission character, optical transmission e...

Optical amplification apparatus

Optical amplifier

Optical transmission device and optical transmission system employi...

Optical amplifier, optical transmission equipment, optical transmis...

Optical amplifier and monitoring method of optical amplifier

Optical amplification apparatus

Optical amplifier, optical transmission equipment, optical transmis...

Optical amplification apparatus

Optical transmission device and optical transmission system employi...

Optical transmission equipment and supervisory system thereof

Optical transmission system and optical coupler/branching filter

Optical amplifier, method of controlling the output light from the...