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last 30 patents
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Patent Grant
Rail transit braking energy recovery system and hybrid power rail t...
Patent number
11,052,774
Issue date
Jul 6, 2021
CRRC Qingdao Sifang Co., Ltd.
Xu Zhang
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
MICROPOROUS LAYER STRUCTURE OF FUEL CELL AND PREPARATION METHOD THE...
Publication number
20210194028
Publication date
Jun 24, 2021
CRRC QINGDAO SIFANG CO., LTD.
Nianfang WAN
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD FOR PRODUCING A HOLLOW SUPPORT FROM A FIBER COMPOSITE MATERI...
Publication number
20190351630
Publication date
Nov 21, 2019
CRRC QINGDAO SIFANG CO., LTD.
Sansan DING
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
RAIL TRANSIT BRAKING ENERGY RECOVERY SYSTEM AND HYBRID POWER RAIL T...
Publication number
20190225089
Publication date
Jul 25, 2019
CRRC QINGDAO SIFANG CO., LTD.
Xu ZHANG
B60 - VEHICLES IN GENERAL