Inventor

KASUGA KENJI

JP7 patents

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

HITACHI LTD

4 patents

US7716293B2May 11, 2010

Presence information sharing method and system

HITACHI LTD161 citations98

US7571207B2Aug 4, 2009

Push-type information delivery method, push-type information delivery system, information delivery apparatus and channel search apparatus based on presence service

HITACHI LTD39 citations91

US7720952B2May 18, 2010

Presence information management system and presence information management server

HITACHI LTD15 citations82

US7668911B2Feb 23, 2010

Presence server, session control server, and packet relay system

HITACHI LTD7 citations72

FUJITSU LTD

1 patent

US6858949B2Feb 22, 2005

Semiconductor memory device and method for arranging memory cells

FUJITSU LTD2 citations60

MIYATA TATSUHIKO

1 patent

US8086717B2Dec 27, 2011

Presence information management system and presence information management server

MIYATA TATSUHIKO1 citations44

KASUGA KENJI

1 patent

US8732316B2May 20, 2014

Communication system

KASUGA KENJI1 citations43