Takayuki Miyakawa

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Saitamaken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Raman gain measuring method and apparatus
- Patent number 7,050,220
- Issue date May 23, 2006
- KDDI Corporation
- Takayuki Miyakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical add-drop multiplexer
- Patent number 5,926,300
- Issue date Jul 20, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Takayuki Miyakawa
- G02 - OPTICS
Information Patent Grant
Method and device for optical add/drop multiplexing using high spee...
- Patent number 5,920,413
- Issue date Jul 6, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Takayuki Miyakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission line
- Patent number 5,912,750
- Issue date Jun 15, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Noriyuki Takeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical add-drop multiplexer
- Patent number 5,822,095
- Issue date Oct 13, 1998
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hidenori Taga
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Raman gain measuring method and apparatus
- Publication number 20040207909
- Publication date Oct 21, 2004
- Takayuki Miyakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE