Inventor · disambiguated record
Keiji Usuba
Also filed as: USUBA KEIJI
8 granted patents·5 pending applications·73 citations·filing 1999–2014
85Inventor score
Top patents by PatentIndex Score
13 records- 0173US7996033B2Radio communication system and base stationHITACHI COMM TECH LTD·Filed 2008·Granted Aug 9, 2011·4 cites·4 claims
- 0273US6614754B1Bi-directional line switched ring network systemHITACHI LTD·Filed 1999·Granted Sep 2, 2003·45 cites·22 claims
- 0368US7724724B2Radio communication apparatusHITACHI LTD·Filed 2004·Granted May 25, 2010·10 cites·12 claims
- 0465US8116263B2Radio communication apparatusYOSHIDA AKIHIKO·Filed 2007·Granted Feb 14, 2012·2 cites·6 claims
- 0565US8094600B2Radio communication apparatusYOSHIDA AKIHIKO·Filed 2008·Granted Jan 10, 2012·2 cites·12 claims
- 0659US8073381B2Radio communication system and base stationYOSHIDA AKIHIKO·Filed 2008·Granted Dec 6, 2011·1 cites·5 claims
- 0757US7184661B1Transmission equipment for network and network transmission systemHITACHI LTD·Filed 2000·Granted Feb 27, 2007·7 cites·10 claims
- 0848US7054334B2Pathsize control method and operation of transmission apparatusHITACHI LTD·Filed 2001·Granted May 30, 2006·2 cites·4 claims
- 0947US2005288025A1Radio communication system and base stationHITACHI COMM TECH LTD·Filed 2005·Application pending·0 cites
- 1044US2015029841A1System for specifying cause of microburst occurrence and method for specifying cause of microburst occurrenceHITACHI LTD·Filed 2014·Application pending·0 cites
- 1144US2015063113A1Traffic control method and traffic control apparatusHITACHI LTD·Filed 2014·Application pending·0 cites
- 1240US2010227634A1Adjoining base station determining method and management deviceTAKAYANAGI DAIGO·Filed 2009·Application pending·0 cites
- 1332US2012142351A1Cellular system and hand-off quality improvement methodTAKAYANAGI DAIGO·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →