Inventor
DOUKAI MASAMI
JP6 patents
⚠️ This page may combine multiple inventors who share the name “DOUKAI MASAMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
5 patentsUS7590048B2Sep 15, 2009
Restoration and protection method and an apparatus thereof
FUJITSU LTD26 citations90
US7957267B2Jun 7, 2011
Fault detection device
FUJITSU LTD8 citations82
US7633889B2Dec 15, 2009
Carrier network of virtual network system and communication node of carrier network
FUJITSU LTD19 citations81
US7120357B2Oct 10, 2006
WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal
FUJITSU LTD7 citations71
US7860031B2Dec 28, 2010
Apparatus and method for processing control packet in spanning tree protocol
FUJITSU LTD6 citations60