Assignee
CHINA RAILWAY 18 BUREAU GROUP CO LTD
CN·4 granted patents·0 citations·filing 2019–2022
Top patents by PatentIndex Score
4 records- 0155US12359567B2Blast hole arrangement structure used for blasting for rheological soft-weak surrounding rock tunnel and construction method for rheological soft-weak surrounding rock tunnelCHINA RAILWAY 18 BUREAU GROUP CO LTD·Filed 2022·Granted Jul 15, 2025·0 cites·16 claims
- 0255US11988494B2Piston-type explosive loading and blasting structure and method for hard rock cable pitCHINA RAILWAY 18 BUREAU GROUP CO LTD·Filed 2022·Granted May 21, 2024·0 cites·10 claims
- 0342US11686198B2Reinforcement system at railway tunnel section passing through karst cave with large dip angle and construction methodCHINA RAILWAY 18 BUREAU GROUP CO LTD·Filed 2021·Granted Jun 27, 2023·0 cites·10 claims
- 0442US11473262B2Bailey support system applied to cross protection of complex pipes and cables and construction method thereofCHINA RAILWAY 18 BUREAU GROUP CO LTD·Filed 2019·Granted Oct 18, 2022·0 cites·14 claims
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