Inventor

YU QINWEI

CN4 patents

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

XIAN MODERN CHEMISTRY RES INST

2 patents

US10266541B2Apr 23, 2019

Joint production method and device for aziridine, piperazine and triethylenediamine

XIAN MODERN CHEMISTRY RES INST0 citations46

US9920008B2Mar 20, 2018

Catalyst for synthesizing ethylenimine as well as preparation method and application thereof

XIAN MODERN CHEMISTRY RES INST1 citations44

XUZHOU CONSTRUCTION MACHINERY GROUP CO LTD

1 patent

US11396444B2Jul 26, 2022

Foldable truss boom section, truss boom and crane

XUZHOU CONSTRUCTION MACHINERY GROUP CO LTD2 citations62

XI'AN MODERN CHEMISTRY RES INSTITUTE

1 patent

US9850250B2Dec 26, 2017

Joint production method and device for aziridine, piperazine and triethylenediamine

XI'AN MODERN CHEMISTRY RES INSTITUTE0 citations46