XC

Xiaoyuan Chang

OE Otis Elevator: 2 patents #33 of 284Top 15%
Overall (2022): #97,911 of 548,613Top 20%
2
Patents 2022

Issued Patents 2022

Patent #TitleCo-InventorsDate
11511970 High friction and wear resistant elevator sheave liner Hong Yang 2022-11-29
11407616 Elevator belt surface protection for installation Hong Yang 2022-08-09