HH

Haofeng Hou

OE Otis Elevator: 2 patents #21 of 199Top 15%
Overall (2024): #163,516 of 561,600Top 30%
2
Patents 2024

Issued Patents 2024

Patent #TitleCo-InventorsDate
12043517 Authorization management and authorization request of elevator service request Kai Li, Siqi Ma, Yang Yang 2024-07-23
11939186 Wireless signal device, system and method for elevator service request Kai Li, Shenhong Wang, Siqi Ma, Fu Qi 2024-03-26