Haixian Liu

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Patents Grantslast 30 patents

Information Patent Grant
Directional antenna system for portable communication device
- Patent number 8,907,847
- Issue date Dec 9, 2014
- Hing S. Tong
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Directional Antenna System for Portable Communication Device
- Publication number 20130293417
- Publication date Nov 7, 2013
- Hing S. Tong
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method and apparatus for dual mode mobile handset
- Publication number 20050239500
- Publication date Oct 27, 2005
- Haixian Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE