Inventor

IJIMA KENGO

JP4 patents

⚠️ This page may combine multiple inventors who share the name “IJIMA KENGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI COMM TECH LTD

2 patents

US7477648B2Jan 13, 2009

Packet forwarding apparatus and access network system

HITACHI COMM TECH LTD17 citations82

US7474669B2Jan 6, 2009

Multicast accounting control system and broadband access server

HITACHI COMM TECH LTD8 citations81

HITACHI LTD

2 patents

US7751394B2Jul 6, 2010

Multicast packet relay device adapted for virtual router

HITACHI LTD7 citations71

US7848342B2Dec 7, 2010

Multicast accounting control system and broadband access server

HITACHI LTD2 citations60