Inventor
SUGIMOTO TOMOHIDE
JP3 patents
Patents
3 patentsUS6600735B1Jul 29, 2003
Internet telephone connection method, bandwidth controller and gate keeper
HITACHI LTD176 citations95
US7272134B2Sep 18, 2007
Internet telephone connection method, bandwidth controller and gate keeper
HITACHI LTD35 citations89
US7154883B2Dec 26, 2006
Internet telephone system
HITACHI LTD2 citations60