Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11686124 | Method and system for operating key and lock core with wireless charging | Qing Chang, Jing Zhang | 2023-06-27 |
| 11189117 | Method and system for controlling a smart lock | Qing Chang, Jing Zhang | 2021-11-30 |
| 10169459 | Intelligent collecting and sharing method and mobile terminal | Wen Qian | 2019-01-01 |
| 9615112 | Method, system, player and mobile terminal for online video playback | Wen Qian | 2017-04-04 |
| 8890651 | Interchangeable lock core and opening method thereof | Shuqiang Jin, Qing Chang, Lei Ji, Shuiping Liao | 2014-11-18 |