Sung-Yao Chang

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Taoyuan, TW

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Patents Grantslast 30 patents

Information Patent Grant
System and method for secure trading mechanism combining wireless c...
- Patent number 6,826,395
- Issue date Nov 30, 2004
- Telepaq Technology, Inc.
- Jun-Yih Lee
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Data active on-demand-transmission system
- Publication number 20020188951
- Publication date Dec 12, 2002
- TelePaq Technology Inc.
- Sung-Yao Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for secure trading mechanism combining wireless c...
- Publication number 20020019223
- Publication date Feb 14, 2002
- Telepaq Technology, Inc.
- Jun-Yih Lee
- G06 - COMPUTING CALCULATING COUNTING