Inventor

LI XIANGRUI

US4 patents

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

CRRC QINGDAO SIFANG ROLLING STOCK RES INST CO LTD

2 patents

US9677959B2Jun 13, 2017

Testing device for electromagnetic attraction force of a magnetic track brake

CRRC QINGDAO SIFANG ROLLING STOCK RES INST CO LTD0 citations36

US9932053B2Apr 3, 2018

Hand brake limiting device

CRRC QINGDAO SIFANG ROLLING STOCK RES INST CO LTD0 citations32

HK APPLIED SCIENCE & TECH RES

1 patent

US8002409B2Aug 23, 2011

Vision treatment procedures and devices

HK APPLIED SCIENCE & TECH RES5 citations58

CRRC QINGDAO SIFANG ROLLING STOCK RES

1 patent

US9828009B2Nov 28, 2017

Hand brake

CRRC QINGDAO SIFANG ROLLING STOCK RES0 citations25