Inventor
RISSANEN PEKKA
FI7 patents
⚠️ This page may combine multiple inventors who share the name “RISSANEN PEKKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NOKIA CORP
6 patentsUS7342905B1Mar 11, 2008
Communications system
NOKIA CORP41 citations89
US7092709B1Aug 15, 2006
Handover of a mobile station from an internal cellular communication system to an external cellular communication system
NOKIA CORP33 citations88
US7171209B2Jan 30, 2007
System and method for allowing subscribers to make internal calls while roaming to other networks
NOKIA CORP17 citations81
US7301919B2Nov 27, 2007
Transmission of voice over IP in wireless telecommunications system
NOKIA CORP13 citations80
US7590407B1Sep 15, 2009
Method and device for carrying out security procedures involving mobile stations in hybrid cellular telecommunication systems
NOKIA CORP2 citations58
US7499706B1Mar 3, 2009
Network frequency setting
NOKIA CORP2 citations56