Inventor
NIIDA SUMARU
JP8 patents
⚠️ This page may combine multiple inventors who share the name “NIIDA SUMARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS6647276B1Nov 11, 2003
Antenna unit and radio base station therewith
HITACHI LTD56 citations96
US6836674B2Dec 28, 2004
Method of controlling directional antenna and apparatus of the same
HITACHI LTD20 citations91
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
US7203462B2Apr 10, 2007
Antenna unit and radio base station therewith
HITACHI LTD10 citations84
US7587174B2Sep 8, 2009
Antenna unit and radio base station therewith
HITACHI LTD2 citations63