Issued Patents 2023
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11796765 | Optical imaging system | Lingbo He | 2023-10-24 |
| 11643299 | Communication system and method for elevator system | Xiaofei Guo | 2023-05-09 |
| 11598936 | Optical imaging lens assembly | Lingbo He, Fujian Dai, Liefeng Zhao | 2023-03-07 |
| 11584613 | Determination for motion of passenger over elevator landing area | Xiaofei Guo | 2023-02-21 |
| 11584616 | Maintenance of passenger carrying system | Ke Yang | 2023-02-21 |
| 11577930 | Automatic elevator calling system and a method for controlling automatic calling elevator | Xiaofei Guo, Haiyan Xue, Renxiang Chen, Heping Qiu, Lieping Wei +2 more | 2023-02-14 |