Inventor
TONG JINGYU
CN4 patents
Patents
4 patentsUS12240732B2Mar 4, 2025
Notification system and method for an elevator and an elevator system
OTIS ELEVATOR CO0 citations57
US11332341B2May 17, 2022
Personal mobile terminal and a method of requesting elevator service
OTIS ELEVATOR CO1 citations57
US11577930B2Feb 14, 2023
Automatic elevator calling system and a method for controlling automatic calling elevator
OTIS ELEVATOR CO0 citations45
US11524867B2Dec 13, 2022
Determination of non-normal elevator calling request in an automatic elevator calling request system
OTIS ELEVATOR CO0 citations45