Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
HC

Hai Cui — 1 Patent in 2021

OEOtis Elevator: 1 patents #88 of 253Top 35%
Redmond, WA: #564 of 1,700 inventorsTop 35%
Washington: #4,694 of 13,672 inventorsTop 35%
Overall (2021): #441,410 of 548,734Top 85%
1 Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11192756 Safety control device for handrail, conveyor system and safety control method for handrail Qing Cheng, Yi Fang, Xingsong Xu, Xinxiang Jiang, Jiaying CHEN +3 more 2021-12-07