Inventor · disambiguated record
Katsuhiko Yamagata
Also filed as: YAMAGATA KATSUHIKO
19 granted patents·2 pending applications·572 citations·filing 1997–2009
96Inventor score
Technology areasH04W
Top patents by PatentIndex Score
21 records- 0198US8185158B2Method and system for mobile communicationsTAMURA MOTOSHI·Filed 2009·Granted May 22, 2012·241 cites·3 claims
- 0296US7630716B2Method and system for mobile communicationsNTT DOCOMO INC·Filed 2007·Granted Dec 8, 2009·31 cites·7 claims
- 0394US8331935B2Method and system for mobile communicationsTAMURA MOTOSHI·Filed 2009·Granted Dec 11, 2012·20 cites·15 claims
- 0494US7383045B2Method and system for mobile communicationsNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Jun 3, 2008·20 cites·1 claims
- 0593US7236787B1Method and system for mobile communicationsNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Jun 26, 2007·117 cites·4 claims
- 0691US7953414B2Method and system for mobile communicationsNTT DOCOMO INC·Filed 2009·Granted May 31, 2011·11 cites·2 claims
- 0791US7664507B2Method and system for mobile communicationsNTT DOCOMO INC·Filed 2006·Granted Feb 16, 2010·12 cites·7 claims
- 0882US7577435B2Method and system for mobile communicationsNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Aug 18, 2009·5 cites·2 claims
- 0980US8259675B2Method and system for mobile communicationsTAMURA MOTOSHI·Filed 2009·Granted Sep 4, 2012·4 cites·15 claims
- 1074US7907730B2Method and system for mobile communicationsNTT DOCOMO INC·Filed 2009·Granted Mar 15, 2011·2 cites·2 claims
- 1174US7792531B2Method and system for mobile communicationsNTT DOCOMO INC·Filed 2007·Granted Sep 7, 2010·2 cites·20 claims
- 1269US8509784B2Mobile communication method, radio control station, and radio base stationMASUDA MASAFUMI·Filed 2008·Granted Aug 13, 2013·4 cites·6 claims
- 1366US8306535B2Communication controller and communication controlling method for controlling a movable communication terminal deviceMASUDA MASAFUMI·Filed 2007·Granted Nov 6, 2012·3 cites·4 claims
- 1461US6314300B1Mobile communication system for supporting multiple simultaneous communications on single mobile terminalNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Nov 6, 2001·46 cites·19 claims
- 1558US8542835B2Method and system for mobile communicationsTAMURA MOTOSHI·Filed 2009·Granted Sep 24, 2013·0 cites·6 claims
- 1658US2009149181A1Method and system for mobile communicationsNIPPON TELEGRAPH & TELEPHONE·Filed 2009·Application pending·0 cites
- 1753US8275133B2Method and system for mobile communicationsTAMURA MOTOSHI·Filed 2006·Granted Sep 25, 2012·0 cites·10 claims
- 1853US6122265AScheme for wire line data transmission in mobile communication systemNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Sep 19, 2000·30 cites·67 claims
- 1953US2006178167A1Method and system for mobile communicationsNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Application pending·0 cites
- 2048US6216003B1Method of handover control in mobile radio communication realizing reduced control loadNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Apr 10, 2001·24 cites·4 claims
- 2139US8542651B2Communication control device and communication control methodMASUDA MASAFUMI·Filed 2007·Granted Sep 24, 2013·0 cites·4 claims
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