Duan Liang — 1 Patent in 2021

OEOtis Elevator: 1 patents #88 of 253Top 35%

Farmington, CT: #24 of 67 inventorsTop 40%

Connecticut: #1,399 of 4,045 inventorsTop 35%

Overall (2021): #469,035 of 548,734Top 90%

1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
11124386	Safety brake configuration for elevator application	Richard N. Fargo, Tahany Ibrahim El-Wardany, James M. Draper, Xiaodong Luo, Joe J. Liou	2021-09-21