ZT

Zhenyan Tong

OE Otis Elevator: 2 patents #21 of 199Top 15%
Overall (2024): #96,823 of 561,600Top 20%
2
Patents 2024

Issued Patents 2024

Patent #TitleCo-InventorsDate
12049384 Elevator safety clamp control device, elevator safety apparatus and elevator system YuHang Ou 2024-07-30
11884515 Clamping device and elevator system Qirui Wang, Ruili Zhang 2024-01-30