Inventor
WU DONGHUA
CN13 patents
⚠️ This page may combine multiple inventors who share the name “WU DONGHUA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CRRC QINGDAO SIFANG CO LTD
10 patentsUS10411503B2Sep 10, 2019
Motor train unit auxiliary power supply apparatus
CRRC QINGDAO SIFANG CO LTD1 citations55
US12017539B2Jun 25, 2024
Voltage control method and apparatus, system, and maglev train
CRRC QINGDAO SIFANG CO LTD0 citations54
US10960901B2Mar 30, 2021
Electromagnetic transverse active damping system, and control method and apparatus therefor
CRRC QINGDAO SIFANG CO LTD0 citations49
US11125006B2Sep 21, 2021
Method, system and device for controlling door of railway vehicle
CRRC QINGDAO SIFANG CO LTD0 citations47
US12163863B2Dec 10, 2024
Detection system for suspension system of maglev train
CRRC QINGDAO SIFANG CO LTD0 citations44
US11916215B2Feb 27, 2024
Power supply battery and power supply system for high-speed maglev trains
CRRC QINGDAO SIFANG CO LTD0 citations44
US12358539B2Jul 15, 2025
Linear motor for maglev train, and maglev train
CRRC QINGDAO SIFANG CO LTD0 citations43
US12337884B2Jun 24, 2025
Positioning system and method for maglev train
CRRC QINGDAO SIFANG CO LTD0 citations43
US12358378B2Jul 15, 2025
Integrated electromagnet and maglev train
CRRC QINGDAO SIFANG CO LTD0 citations41
US10192694B2Jan 29, 2019
Interlocking control device of multiple-unit train safety circuit
CRRC QINGDAO SIFANG CO LTD0 citations31