Zhu; Yunzhou
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zhu; Yunzhou.The latest application filed is for "method, system, computer apparatus, and storage medium for inspecting operation period of valve box".
- Zhu; Yunzhou - Shenzhen CN
- Zhu; Yunzhou - Duluth GA
| Patent | Date |
|---|---|
| Method, System, Computer Apparatus, And Storage Medium For Inspecting Operation Period Of Valve Box App 20210318193 - Yuan; Hongjie ; et al. | 2021-10-14 |
| System and method for user authentication with exposed and hidden keys Grant 8,132,020 - Zhu , et al. March 6, 2 | 2012-03-06 |
| Systems and methods for preventing spam Grant 7,711,786 - Zhu , et al. May 4, 2 | 2010-05-04 |
| Systems and Methods for Preventing Spam App 20090044013 - Zhu; Yunzhou ; et al. | 2009-02-12 |
| System And Method For User Authentication With Exposed And Hidden Keys App 20080240447 - ZHU; Yunzhou ; et al. | 2008-10-02 |
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