Inventor
HIRAYAMA KOJI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “HIRAYAMA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
5 patentsUS6731621B1May 4, 2004
Mobil communication system for providing IP packet communications and method for routing IP packets
HITACHI LTD83 citations96
US7020084B1Mar 28, 2006
Communication system, a communication method and communication terminal
HITACHI LTD46 citations92
US7003302B2Feb 21, 2006
Wireless base station and packet transfer apparatus for dynamically controlling data transmission rate
HITACHI LTD38 citations89
US6879592B1Apr 12, 2005
Switching system and switching control method
HITACHI LTD13 citations82
US6826167B2Nov 30, 2004
Mobile communication system
HITACHI LTD14 citations81