Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11939186 | Wireless signal device, system and method for elevator service request | Kai Li, Shenhong Wang, Siqi Ma, Haofeng Hou | 2024-03-26 |
| 11708237 | Communication for elevator service request | Kai Li, Haofeng Hou, Siqi Ma, Hui Chen | 2023-07-25 |
| 11505425 | Wireless signal device, system and method for elevator service request | Hui Chen, Shenhong Wang, Siqi Ma | 2022-11-22 |
| 10645543 | Elevator service requesting based on social media application module | Hui Chen, Shenhong Wang, Siqi Ma | 2020-05-05 |