Hui Chen — 1 Patent in 2023

OEOtis Elevator: 1 patents #73 of 258Top 30%

Shanghai, WA: #54 of 80 inventorsTop 70%

Overall (2023): #420,210 of 537,848Top 80%

1 Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
11708237	Communication for elevator service request	Kai Li, Haofeng Hou, Fu Qi, Siqi Ma	2023-07-25