Haofeng Hou — 5 Patents at Otis Elevator

Haofeng Hou has been granted 5 US patents while listed as an inventor at Otis Elevator. The first was granted in 2022 and the most recent in February 2025. Haofeng Hou ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Haofeng Hou in Shanghai, CN.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
12234122	Authorization management and authorization request of elevator service request	Yang Yang, Yu Zhang, Kai Li, Siqi Ma	2025-02-25
12043517	Authorization management and authorization request of elevator service request	Kai Li, Siqi Ma, Yang Yang	2024-07-23
11939186	Wireless signal device, system and method for elevator service request	Kai Li, Shenhong Wang, Siqi Ma, Fu Qi	2024-03-26
11708237	Communication for elevator service request	Kai Li, Fu Qi, Siqi Ma, Hui Chen	2023-07-25
11524866	Testing for wireless beacons of elevator system and field installation of the elevator system	Kai Li, Yang Yang, Siqi Ma, Yu Zhang	2022-12-13

Haofeng Hou — 5 Patents

Issued Patents All Time

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