Inventor
YAMAGATA KATSUHIKO
JP19 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGATA KATSUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
6 patentsUS7236787B1Jun 26, 2007
Method and system for mobile communications
NIPPON TELEGRAPH & TELEPHONE117 citations98
US7383045B2Jun 3, 2008
Method and system for mobile communications
NIPPON TELEGRAPH & TELEPHONE20 citations96
US6216003B1Apr 10, 2001
Method of handover control in mobile radio communication realizing reduced control load
NIPPON TELEGRAPH & TELEPHONE24 citations92
US6122265ASep 19, 2000
Scheme for wire line data transmission in mobile communication system
NIPPON TELEGRAPH & TELEPHONE30 citations92
US6314300B1Nov 6, 2001
Mobile communication system for supporting multiple simultaneous communications on single mobile terminal
NIPPON TELEGRAPH & TELEPHONE46 citations91
US7577435B2Aug 18, 2009
Method and system for mobile communications
NIPPON TELEGRAPH & TELEPHONE5 citations73
TAMURA MOTOSHI
5 patentsUS8185158B2May 22, 2012
Method and system for mobile communications
TAMURA MOTOSHI241 citations98
US8331935B2Dec 11, 2012
Method and system for mobile communications
TAMURA MOTOSHI20 citations95
US8259675B2Sep 4, 2012
Method and system for mobile communications
TAMURA MOTOSHI4 citations73
US8542835B2Sep 24, 2013
Method and system for mobile communications
TAMURA MOTOSHI0 citations62
US8275133B2Sep 25, 2012
Method and system for mobile communications
TAMURA MOTOSHI0 citations51
NTT DOCOMO INC
5 patentsUS7630716B2Dec 8, 2009
Method and system for mobile communications
NTT DOCOMO INC31 citations96
US7953414B2May 31, 2011
Method and system for mobile communications
NTT DOCOMO INC11 citations92
US7664507B2Feb 16, 2010
Method and system for mobile communications
NTT DOCOMO INC12 citations92
US7907730B2Mar 15, 2011
Method and system for mobile communications
NTT DOCOMO INC2 citations73
US7792531B2Sep 7, 2010
Method and system for mobile communications
NTT DOCOMO INC2 citations73
MASUDA MASAFUMI
3 patentsUS8509784B2Aug 13, 2013
Mobile communication method, radio control station, and radio base station
MASUDA MASAFUMI4 citations61
US8306535B2Nov 6, 2012
Communication controller and communication controlling method for controlling a movable communication terminal device
MASUDA MASAFUMI3 citations61
US8542651B2Sep 24, 2013
Communication control device and communication control method
MASUDA MASAFUMI0 citations35