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

Hui Fang — 39 Patents

OEOtis Elevator: 28 patents #38 of 1,840Top 3%
CACarrier: 9 patents #209 of 2,507Top 9%
EHE Ink Holdings: 1 patents #459 of 639Top 75%
SCState Grid Corporation Of China: 1 patents #289 of 1,453Top 20%
RTX (Raytheon): 1 patents #8,290 of 15,912Top 55%
Chongqing, CN: #7 of 1,168 inventorsTop 1%
Overall (All Time): #81,245 of 4,157,543Top 2%
39 Patents All Time
Hui Fang has been granted 39 US patents while listed as an inventor at Otis Elevator. The first was granted in 2017 and the most recent in September 2025. Hui Fang ranks #81,245 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Hui Fang in Chongqing, CN.

Issued Patents All Time

Showing 1–25 of 39 patents

Patent #TitleCo-InventorsDate
12418247 Modulation method for direct current (DC) coupling converter with less dc voltage sensors Jingsen Zhou, Yongtao Chen, Fan Mu, Shengyi Zhu, Cheng Wang +6 more 2025-09-16
11836995 Traffic list generation for passenger conveyance Feng Chen, Liu Yu, Xiangyu Wang, Zhen Jia, Arthur Hsu +1 more 2023-12-05
11760605 Elevator door monitoring system, elevator system and elevator door monitoring method Zhen Jia, Walter Thomas Schmidt 2023-09-19
11597628 Systems and methods for improved elevator scheduling Zhen Jia, Arthur Hsu, Alan Matthew Finn, Luca F. Bertuccelli 2023-03-07
11526161 People flow estimation system and the failure processing method thereof Xiangbao Li, Zhen Jia 2022-12-13
11377326 Elevator door control system, elevator system, and elevator door control method Zhen Jia, Walter Thomas Schmidt 2022-07-05
11232312 Traffic list generation for passenger conveyance Feng Chen, Liu Yu, Xiangyu Wang, Zhen Jia, Arthur Hsu +1 more 2022-01-25
11145177 High sensitivity fiber optic based detection Michael J. Birnkrant, Jennifer M. Alexander, Alan Matthew Finn, Yanzhi Chen, Jie Xi +1 more 2021-10-12
11132883 High sensitivity fiber optic based detection Michael J. Birnkrant, Jennifer M. Alexander, Peter R. Harris, Jie Xi, Yanzhi Chen 2021-09-28
11113516 People flow estimation system and people flow estimation method Zhen Jia, Keyu Li, Zhengang Zhu, Xiangbao Li, Mei Chen 2021-09-07
11087605 Smoke detection methodology Jie Xi, Peter R. Harris, Vivek Venugopalan, David L. Lincoln 2021-08-10
11021344 Depth sensor and method of intent deduction for an elevator system Alan Matthew Finn, Arthur Hsu, Zhen Jia 2021-06-01
10957176 High sensitivity fiber optic based detection Michael J. Birnkrant, Jennifer M. Alexander, Yanzhi Chen, Peter R. Harris, Jie Xi +1 more 2021-03-23
10532909 Elevator passenger tracking control and call cancellation system Stephen Richmond, Alan Matthew Finn, Arthur Hsu 2020-01-14
10513416 Depth sensor based passenger sensing for passenger conveyance door control Arthur Hsu, Alan Matthew Finn, Zhen Jia 2019-12-24
10513415 Depth sensor based passenger sensing for passenger conveyance control Arthur Hsu, Alan Matthew Finn, Zhen Jia 2019-12-24
10482740 Encoder-less lidar positioning technique for detection and alarm Antonio M. Vincitore, Peter R. Harris, Jie Xi 2019-11-19
10479647 Depth sensor based sensing for special passenger conveyance loading conditions Arthur Hsu, Alan Matthew Finn, Zhen Jia 2019-11-19
10479653 Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof Qiang Li, Jianwei Zhao, Zhaoxia Hu, LongWen Wang, Zhen Jia +1 more 2019-11-19
10474905 Methods and systems for auto-commissioning people counting systems Alan Matthew Finn 2019-11-12
10371512 Method and system for multiple 3D sensor calibration Zhen Jia, Yanzhi Chen, Arthur Hsu, Alan Matthew Finn 2019-08-06
10364130 Speed detection system of passenger conveyor and speed detection method thereof Yanying Chen, Zhaoxia Hu, Zhen Jia, Jianwei Zhao, Qiang Li +2 more 2019-07-30
10294072 Elevator capable of monitoring use of child and a control method thereof Jianwei Zhao, Qiang Li 2019-05-21
10291904 Auto commissioning system and method Alan Matthew Finn, Arthur Hsu 2019-05-14
10282847 Monitoring system of a passenger conveyor and monitoring method thereof Jianguo Li, Zhaoxia Hu, LongWen Wang, Zhen Jia, Jianwei Zhao +7 more 2019-05-07