Naohiko Baba

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Fujisawa-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber communication equipment and its applied optical systems
- Patent number 7,164,865
- Issue date Jan 16, 2007
- OpNext Japan, Inc.
- Kimio Tatsuno
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmission device and optical transmission system using t...
- Patent number 7,031,620
- Issue date Apr 18, 2006
- OpNext Japan, Inc.
- Shigeru Tokita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Driver circuit and optical-transmission module
- Patent number 6,829,441
- Issue date Dec 7, 2004
- OpNext Japan, Inc.
- Norio Chujo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Driver circuit and optical-transmission module
- Patent number 6,606,177
- Issue date Aug 12, 2003
- Hitachi, Ltd.
- Norio Chujo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver module optical transmitter module phase-locked loo...
- Patent number 6,501,583
- Issue date Dec 31, 2002
- OpNext Japan, Inc.
- Mitsuo Akashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength stability control apparatus, optical transmitter...
- Patent number 6,229,832
- Issue date May 8, 2001
- Hitachi, Ltd.
- Naohiko Baba
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Driver circuit and optical-transmission module
- Publication number 20030198479
- Publication date Oct 23, 2003
- Norio Chujo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission device and optical transmission system using t...
- Publication number 20020061035
- Publication date May 23, 2002
- Hitachi,Ltd.
- Shigeru Tokita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical fiber communication equipment and its applied optical systems
- Publication number 20020051270
- Publication date May 2, 2002
- Kimio Tatsuno
- H01 - BASIC ELECTRIC ELEMENTS