Inventor
ISHIOKA YUZURU
JP7 patents
Patents
7 patentsUS5469282ANov 21, 1995
Power supply system for optical network unit of a fiber in the loop
FUJITSU LTD39 citations90
US5195124AMar 16, 1993
Testing system for local subscribers
FUJITSU LTD39 citations90
US5615033AMar 25, 1997
Optical signal transmission apparatus and method
FUJITSU LTD20 citations85
US6999422B2Feb 14, 2006
Communication device
FUJITSU LTD18 citations82
US6157704ADec 5, 2000
Subscriber line test system for access network
FUJITSU LTD4 citations60
US7219147B2May 15, 2007
Method of effecting protection control in communication network and RPR apparatus
FUJITSU LTD2 citations59
US5483592AJan 9, 1996
Ringer unit driving system in a subscriber transmission system
FUJITSU LTD3 citations53