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Qingdao, Shandong, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Method, system and device for controlling door of railway vehicle
Patent number
11,125,006
Issue date
Sep 21, 2021
CRRC Qingdao Sifang Co., Ltd.
Bo Chen
B61 - RAILWAYS
Information
Patent Grant
Detection method and system for pantograph arc based on train power...
Patent number
10,416,222
Issue date
Sep 17, 2019
CRRC QINGDAO SIFANG CO., LTD.
Buchao Jia
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
METHOD, SYSTEM AND DEVICE FOR CONTROLLING DOOR OF RAILWAY VEHICLE
Publication number
20190024436
Publication date
Jan 24, 2019
CRRC QINGDAO SIFANG CO., LTD.
Bo Chen
B61 - RAILWAYS
Information
Patent Application
DETECTION METHOD AND SYSTEM FOR PANTOGRAPH ARC BASED ON TRAIN POWER...
Publication number
20170276716
Publication date
Sep 28, 2017
CRRC QINGDAO SIFANG CO., LTD.
Buchao JIA
G01 - MEASURING TESTING