Inventor
NAKAHARA NARUHITO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “NAKAHARA NARUHITO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS7764680B2Jul 27, 2010
Communication system and call control server
HITACHI LTD21 citations92
US6834197B2Dec 21, 2004
Base station apparatus, mobile communication system, and method of controlling transmission power
HITACHI LTD30 citations91
US6615030B1Sep 2, 2003
Mobile communications system and radio base station apparatus
HITACHI LTD43 citations91
US8948131B2Feb 3, 2015
Radio communication system, radio communication method, and gateway
HITACHI LTD5 citations72
US6741598B1May 25, 2004
Switching method, switching equipment and switching network
HITACHI LTD6 citations61
US7746852B2Jun 29, 2010
Packet data serving node and communication method using the same
HITACHI LTD2 citations55
US9420590B2Aug 16, 2016
Mobile gateway, control method for the same, and radio access network equipped with the same
HITACHI LTD1 citations51
US9137706B2Sep 15, 2015
Wireless communication system, wireless communication method, and gateway
HITACHI LTD0 citations41
US7983227B2Jul 19, 2011
Communication terminal apparatus, communication connection apparatus, and communication method using them
HITACHI LTD0 citations34