Tarja-Leena Ranta

Follow

Person

Lohja, FI

People

Patents Grantslast 30 patents

Information Patent Grant
Unbroken primary connection switching between different communicati...
- Patent number RE47745
- Issue date Nov 26, 2019
- Nokia Technologies Oy
- Keijo Virtanen
Information Patent Grant
Unbroken primary connection switching between different communicati...
- Patent number 7,317,924
- Issue date Jan 8, 2008
- Nokia Corporation
- Keijo Virtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tracing of a malicious call
- Patent number 7,162,225
- Issue date Jan 9, 2007
- Nokia Corporation
- Tarja-Leena Ranta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Unbroken primary connection switching between communications services
- Patent number 6,879,828
- Issue date Apr 12, 2005
- Nokia Corporation
- Keijo Virtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Unbroken primary connection switching between different communicati...
- Publication number 20050143053
- Publication date Jun 30, 2005
- Kejio Virtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Unbroken primary connection switching between communications services
- Publication number 20040048612
- Publication date Mar 11, 2004
- Kejio Virtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tracing of a malicious call
- Publication number 20030148754
- Publication date Aug 7, 2003
- Tarja- Leena Ranta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE