Er-Ta Ma

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Global internet voice communication system
- Patent number 7,466,693
- Issue date Dec 16, 2008
- Erh-Jen Hou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Joystick structure for a computer USB keyboard and mouse
- Publication number 20060164391
- Publication date Jul 27, 2006
- Er-Ta Ma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Global internet voice communication system
- Publication number 20060165061
- Publication date Jul 27, 2006
- Erh-Jen Hou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Global internet voice communication system method
- Publication number 20060069781
- Publication date Mar 30, 2006
- Erh-Jen Hou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP voice packet network voice system
- Publication number 20040202188
- Publication date Oct 14, 2004
- CaManGi Corporation
- Erh-Jen Hou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE