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Patents Grants
last 30 patents
Information
Patent Grant
Chassis component of railway vehicle, and railway vehicle
Patent number
11,225,270
Issue date
Jan 18, 2022
CRRC QINGDAO SIFANG CO., LTD.
Yu Wang
B61 - RAILWAYS
Information
Patent Grant
Side wall component of railway vehicle, and railway vehicle
Patent number
11,142,223
Issue date
Oct 12, 2021
CRRC QINGDAO SIFANG CO., LTD.
Bo Song
B61 - RAILWAYS
Information
Patent Grant
Vehicle end skeleton structure and rail vehicle having same
Patent number
11,142,222
Issue date
Oct 12, 2021
CRRC QINGDAO SIFANG CO., LTD.
Zhanxuan Guo
B61 - RAILWAYS
Information
Patent Grant
Chassis component of railway vehicle, and railway vehicle
Patent number
11,046,336
Issue date
Jun 29, 2021
CRRC QINGDAO SIFANG CO., LTD.
Xiaojie Wang
B61 - RAILWAYS
Information
Patent Grant
Beam structure and hybrid welding method thereof
Patent number
10,730,145
Issue date
Aug 4, 2020
CRRC QINGDAO SIFANG CO., LTD.
Xiaohui Han
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
BEAM STRUCTURE AND HYBRID WELDING METHOD THEREOF
Publication number
20200023469
Publication date
Jan 23, 2020
CRRC QINGDAO SIFANG CO., LTD.
Xiaohui HAN
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Side Wall Component of Railway Vehicle, and Railway Vehicle
Publication number
20190168781
Publication date
Jun 6, 2019
CRRC QINGDAO SIFANG CO., LTD.
Bo SONG
B61 - RAILWAYS
Information
Patent Application
Vehicle end skeleton structure and rail vehicle having same
Publication number
20190084589
Publication date
Mar 21, 2019
CRRC QINGDAO SIFANG CO., LTD.
Zhanxuan GUO
B61 - RAILWAYS
Information
Patent Application
Chassis Component of Railway Vehicle, and Railway Vehicle
Publication number
20190084591
Publication date
Mar 21, 2019
CRRC QINGDAO SIFANG CO., LTD.
Yu WANG
B61 - RAILWAYS
Information
Patent Application
Chassis Component of Railway Vehicle, and Railway Vehicle
Publication number
20190077424
Publication date
Mar 14, 2019
CRRC QINGDAO SIFANG CO., LTD.
Xiaojie WANG
B61 - RAILWAYS