Yoshihiro Shimizu

Follow

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
WDM transmission apparatus
- Patent number 8,331,778
- Issue date Dec 11, 2012
- Fujitsu Limited
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resilient packet ring device
- Patent number 7,532,634
- Issue date May 12, 2009
- Fujitsu Limited
- Atsuko Higashitaniguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system
- Patent number 7,113,700
- Issue date Sep 26, 2006
- Fujitsu Limited
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
HITLESS PATH SWITCHING RING NETWORK, HITLESS PATH SWITCHING TRANSMI...
- Patent number 6,633,537
- Issue date Oct 14, 2003
- Fujitsu Limited
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN switching system having testing facilities
- Patent number 5,442,621
- Issue date Aug 15, 1995
- Fujitsu Limited
- Noboru Ise
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
WDM TRANSMISSION APPARATUS
- Publication number 20090317076
- Publication date Dec 24, 2009
- FUJITSU LIMITED
- Yoshihiro SHIMIZU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus
- Publication number 20070230968
- Publication date Oct 4, 2007
- FUJITSU LIMITED
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplification device, raman amplifier, optical wavelength-d...
- Publication number 20060044646
- Publication date Mar 2, 2006
- FUJITSU LIMITED
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Resilient packet ring device
- Publication number 20050243845
- Publication date Nov 3, 2005
- Fujitsu Limited
- Atsuko Higashitaniguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system
- Publication number 20030223751
- Publication date Dec 4, 2003
- FUJITSU LIMITED
- Yoshihiro Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE