Tongxin Qi

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Patents Grantslast 30 patents

Information Patent Grant
Smart card operating system and method
- Patent number 8,496,174
- Issue date Jul 30, 2013
- Beijing Watchdata Systems Co., Ltd.
- Dacai Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dual usage smart card of CPU and logical encryption and its data sy...
- Patent number 8,255,706
- Issue date Aug 28, 2012
- Beijing Watch Data System Co., Ltd.
- Dacai Chen
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
EQUIPMENT AND METHOD TO IMPLEMENT ADAPTIVE FUNCTIONS OF COMMUNICATI...
- Publication number 20100191870
- Publication date Jul 29, 2010
- Beijing Watch Data System ,Co., Ltd. a corporation
- Tongxin Qi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DUAL USAGE SMART CARD OF CPU AND LOGICAL ENCRYPTION AND ITS DATA SY...
- Publication number 20100017613
- Publication date Jan 21, 2010
- BEIJING WATCH DATA SYSTEM CO., LTD.
- Dacai Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Smart card operating system and method
- Publication number 20080051143
- Publication date Feb 28, 2008
- Beijing Watchdata System Co., Ltd.
- Dacai Chen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Smart card operating system and operating process
- Publication number 20080000989
- Publication date Jan 3, 2008
- Beijing Watchdata System Co., Ltd.
- Dacai Chen
- G06 - COMPUTING CALCULATING COUNTING