Assignee
China railway tunnel group co ltd
CN·3 granted patents·1 pending application·2 citations·filing 2021–2023
Top patents by PatentIndex Score
4 records- 0180US11946217B1Top plate jacking device and jacking construction method configured for V-shaped columnsChina railway tunnel group co ltd·Filed 2023·Granted Apr 2, 2024·2 cites·11 claims
- 0241US2022389815A1Tunnel surrounding rock supporting method and system based on tunnel field deconstruction and reconstruction theoryChina railway tunnel group co ltd·Filed 2022·Application pending·0 cites
- 0339US11484912B2Active sorting muck-collecting device for slurry balancing shieldChina railway tunnel group co ltd·Filed 2021·Granted Nov 1, 2022·0 cites·8 claims
- 0438US11371348B2Pipeline annular self-traveling guide apparatus and methodChina railway tunnel group co ltd·Filed 2021·Granted Jun 28, 2022·0 cites·10 claims
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