Patents/Assignees

CHINA RAILWAY 18 BUREAU GROUP Co. Ltd.

3 patents in portfolio

US12359567utility2025
Blast Hole Arrangement Structure Used for Blasting for Rheological Soft-weak Surrounding Rock Tunnel and Construction Method for Rheological Soft-weak Surrounding Rock Tunnel
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US11988494utility2024
Piston-type Explosive Loading and Blasting Structure and Method for Hard Rock Cable Pit
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US11686198utility2023
Reinforcement System at Railway Tunnel Section Passing Through Karst Cave with Large Dip Angle and Construction Method
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