E21D

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SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K 17/00; cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)

Recent Patents

Not Available
Patent #TitleFiling DateIssue DatePatent Owner
8,690,478 Tunnel reinforcement structure and tunnel construction method capable of controlling ground displacement using pressurization Oct 12, 11 Apr 08, 14 HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD., HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD.
8,690,484 Sheathed cable Nov 24, 08 Apr 08, 14 JENNMAR CORPORATION, FCI HOLDINGS DELAWARE, INC.
8,690,485 Rock bolt sealing system Sep 08, 12 Apr 08, 14 JENNMAR CORPORATION, Not available
8,684,470 Drill head for a tunneling apparatus Feb 11, 10 Apr 01, 14 VERMEER MANUFACTURING COMPANY, VERMEER MANUFACTURING COMPANY
8,672,414 Method for controlling longwall mining operations Feb 19, 08 Mar 18, 14 RAG AKTIENGESELLSCHAFT, RAG AKTIENGESELLSCHAFT

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2014/0099,167 MINE ROOF BOLT ASSEMBLY Mar 17, 12 Apr 10, 14 , Not available
2014/0100,304 ENCAPSULATED ACTIVATOR AND ITS USE TO TRIGGER A GELLING SYSTEM BY PHYSICAL MEANS Mar 08, 12 Apr 10, 14 RHODIA OPERATIONS,
2014/0091,612 MOBILE MINING MACHINE AND METHOD FOR DRIVING TUNNELS, ROADWAYS OR SHAFTS, IN PARTICULAR IN HARD ROCK Apr 24, 12 Apr 03, 14 CATERPILLAR GLOBAL MINING EUROPE GMBH,
2014/0084,668 EXCAVATION MACHINE Jun 27, 12 Mar 27, 14 HITACHI ZOSEN CORPORATION,
2014/0086,686 LOW PROFILE MINE SHAFT LINER PLATE SYSTEM AND METHOD Sep 18, 13 Mar 27, 14 CONTECH ENGINEERED SOLUTIONS LLC,
2014/0077,580 LONGWALL MINING ROOF SUPPORTS Nov 22, 13 Mar 20, 14 JOY MM DELAWARE, INC.,
2014/0079,485 Method for Preventing Shield Casing Catching Due to Too Large Frictional Resistance in Earth Pressure Balance Shield Machine Jun 09, 11 Mar 20, 14 CHINA RAILWAY TUNNELING EQUIPMENT CO., LTD.,

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