Changhong Li

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Patents Grantslast 30 patents

Information Patent Grant
System and method for using quarantine networks to protect cellular...
- Patent number 9,705,911
- Issue date Jul 11, 2017
- Nokia Technologies Oy
- Changhong Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Generating keys for protection in next generation mobile networks
- Patent number 9,554,271
- Issue date Jan 24, 2017
- Nokia Technologies Oy
- Changhong Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Support of UICC-less calls
- Patent number 8,526,408
- Issue date Sep 3, 2013
- Nokia Corporation
- Da Jiang Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system
- Patent number 7,469,145
- Issue date Dec 23, 2008
- Nokia Corporation
- Changhong Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SUPPORT OF UICC-LESS CALLS
- Publication number 20100142499
- Publication date Jun 10, 2010
- Nokia Corporation
- Dajiang Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Generating keys for protection in next generation mobile networks
- Publication number 20080184032
- Publication date Jul 31, 2008
- Changhong Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for using quarantine networks to protect cellular...
- Publication number 20070006312
- Publication date Jan 4, 2007
- Nokia Corporation
- Changhong Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Communication system
- Publication number 20050176438
- Publication date Aug 11, 2005
- Nokia Corporation
- Changhong Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE