Yoshio Nabeyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
WDM optical transmission equipment with redundant configuration, an...
- Patent number 7,450,844
- Issue date Nov 11, 2008
- Fujitsu Limited
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and optical transmission system
- Patent number 6,266,466
- Issue date Jul 24, 2001
- Fujitsu Limited
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and optical transmission system
- Patent number 5,859,938
- Issue date Jan 12, 1999
- Fujitsu Limited
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for preventing occurrence of surge light in op...
- Patent number 5,570,227
- Issue date Oct 29, 1996
- Fujitsu Limited
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PRINT SUBSTRATE, ELECTRONIC DEVICE, AND METHOD OF MANUFACTURING PRI...
- Publication number 20150351240
- Publication date Dec 3, 2015
- Fujitsu Limited
- Yoshio NABEYAMA
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
WDM optical transmission equipment with redundant configuration, an...
- Publication number 20060024058
- Publication date Feb 2, 2006
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Signal light transmitter including variable optical attenuator
- Publication number 20040247326
- Publication date Dec 9, 2004
- FUJITSU LIMITED
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System adopting wavelength division multiplexing and method of oper...
- Publication number 20040208569
- Publication date Oct 21, 2004
- FUJITSU LIMITED
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Chromatic dispersion compensating apparatus and controlling method...
- Publication number 20040113060
- Publication date Jun 17, 2004
- FUJITSU LIMITED
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE