Qiang BJ Han

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BEIJING, CN

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Patents Grantslast 30 patents

Information Patent Grant
Generation of a captcha on a handheld touch screen device
- Patent number 10,346,606
- Issue date Jul 9, 2019
- International Business Machines Corporation
- Bai Chen Deng
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
GENERATION OF A CAPTCHA ON A HANDHELD TOUCH SCREEN DEVICE
- Publication number 20190057206
- Publication date Feb 21, 2019
- International Business Machines Corporation
- Bai Chen Deng
- G06 - COMPUTING CALCULATING COUNTING