Hironari Matsuda

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transmission system constructing method and system
- Patent number 7,292,785
- Issue date Nov 6, 2007
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal receiving module, optical signal receiver and optica...
- Patent number 7,171,128
- Issue date Jan 30, 2007
- OpNext Japan, Inc.
- Shuichi Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system constructing method and system
- Patent number 7,167,652
- Issue date Jan 23, 2007
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system constructing method and system
- Patent number 6,728,489
- Issue date Apr 27, 2004
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission equipment which transmits an amplified optical...
- Patent number 6,266,169
- Issue date Jul 24, 2001
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission equipment which transmits an amplified optical...
- Patent number 6,018,405
- Issue date Jan 25, 2000
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength multiplexing system
- Patent number 6,005,699
- Issue date Dec 21, 1999
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical repeater and optical transmitter
- Patent number 5,875,046
- Issue date Feb 23, 1999
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical multiplex transmission equipment and method
- Patent number 5,861,972
- Issue date Jan 19, 1999
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical repeater and optical transmitter
- Patent number 5,812,289
- Issue date Sep 22, 1998
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system constructing method and system
- Patent number 5,739,932
- Issue date Apr 14, 1998
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical multiplex transmission equipment and method
- Patent number 5,671,074
- Issue date Sep 23, 1997
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system constructing method and system
- Patent number 5,555,477
- Issue date Sep 10, 1996
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber transmission system and supervision method of the same
- Patent number 5,500,756
- Issue date Mar 19, 1996
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Optical transmission system constructing method and system
- Publication number 20070053687
- Publication date Mar 8, 2007
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system constructing method and system
- Publication number 20040161189
- Publication date Aug 19, 2004
- Hitachi, Ltd.
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal receiving module, optical signal receiver and optica...
- Publication number 20030081297
- Publication date May 1, 2003
- OpNext Japan, Inc.
- Shuichi Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system constructing method and system
- Publication number 20020024699
- Publication date Feb 28, 2002
- Hitachi, Ltd
- Keiji Tomooka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hironari Matsuda

Person

Patents Grantslast 30 patents

Optical transmission system constructing method and system

Optical signal receiving module, optical signal receiver and optica...

Optical transmission system constructing method and system

Optical transmission system constructing method and system

Optical transmission equipment which transmits an amplified optical...

Optical transmission equipment which transmits an amplified optical...

Optical wavelength multiplexing system

Optical repeater and optical transmitter

Optical multiplex transmission equipment and method

Optical repeater and optical transmitter

Optical transmission system constructing method and system

Optical multiplex transmission equipment and method

Optical transmission system constructing method and system

Optical fiber transmission system and supervision method of the same

Patents Applicationslast 30 patents

Optical transmission system constructing method and system

Optical transmission system constructing method and system

Optical signal receiving module, optical signal receiver and optica...

Optical transmission system constructing method and system