Liangfeng Xu

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Coppell, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-directivity sound device
- Patent number 9,451,356
- Issue date Sep 20, 2016
- Nokia Technologies Oy
- Liangfeng Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual-mode loudspeaker
- Patent number 8,116,508
- Issue date Feb 14, 2012
- Nokia Corporation
- Liangfeng Leon Xu
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Grant
Portable electronic device with compliant sliding hinge
- Patent number 7,822,446
- Issue date Oct 26, 2010
- Nokia Corporation
- Ramin Vatanparast
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Printed wire board and associated mobile terminal
- Patent number 7,230,187
- Issue date Jun 12, 2007
- Nokia Corporation
- Liangfeng Xu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Multi-directivity sound device
- Publication number 20100158287
- Publication date Jun 24, 2010
- Nokia Corporation
- Liangfeng Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RESISTIVE MULTI TOUCH SCREEN
- Publication number 20100141604
- Publication date Jun 10, 2010
- Nokia Corporation
- Chenguang Cai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Dual-mode loudspeaker
- Publication number 20100080409
- Publication date Apr 1, 2010
- Nokia Corporation
- Liangfeng Leon Xu
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Application
Portable electronic device with compliant sliding hinge
- Publication number 20080194120
- Publication date Aug 14, 2008
- Nokia Corporation
- Ramin Vatanparast
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Printed wire board and associated mobile terminal
- Publication number 20050135072
- Publication date Jun 23, 2005
- Nokia Corporation
- Liangfeng Xu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR