Huaiguang Shan

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Bankcard transaction exchange system
- Patent number 7,617,152
- Issue date Nov 10, 2009
- China Unionpay Co., Ltd.
- Hongfeng Chai
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Novel Bankcard Transaction Exchange System
- Publication number 20080098393
- Publication date Apr 24, 2008
- Hongfeng Chai
- G06 - COMPUTING CALCULATING COUNTING