Inventor

QI ZHENGWU

CN3 patents

⚠️ This page may combine multiple inventors who share the name “QI ZHENGWU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZHUHAI BRANCH GUANGDONG INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND RES

2 patents

US10023440B2Jul 17, 2018

System and method for measuring safety clearance between the steps and skirt panels of an escalator and positioning hidden dangers

ZHUHAI BRANCH GUANGDONG INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND RES2 citations63

US10723590B2Jul 28, 2020

Device and method for detecting compression and reposition performance of hydraulic buffer for elevator

ZHUHAI BRANCH GUANGDONG INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND RES1 citations51

GUANGDONG INSPECTION AND RES INSTITUTE OF SPECIAL EQUIPMENT ZHUHAI INSPECTION INSTITUTE

1 patent

US10392230B2Aug 27, 2019

System and method for testing an escalator

GUANGDONG INSPECTION AND RES INSTITUTE OF SPECIAL EQUIPMENT ZHUHAI INSPECTION INSTITUTE1 citations46