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
8,696,068 Cutting device with function of changing diameter in small range for soft rock shield machine Apr 18, 11 Apr 15, 14 CHINA RALL WAY TUNNELING EQUIPMENT CO., LTD., CHINA RALL WAY TUNNELING EQUIPMENT CO., LTD.
8,696,249 Rock bolt and rock bolt component Dec 06, 12 Apr 15, 14 RSC MINING (PTY) LTD, RSC MINING (PTY) LTD
8,696,284 Threaded rod Apr 21, 11 Apr 15, 14 STAHLWERK ANNAHUTTE MAX AICHER GMBH & CO KG, STAHLWERK ANNAHUTTE MAX AICHER GMBH & CO. KG
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

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Recent Publications

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Publication #TitleFiling DatePub DatePatent Owner
2014/0105,690 Tension Cable Bolt Oct 11, 12 Apr 17, 14 MINOVA USA, INC.,
2014/0099,167 MINE ROOF BOLT ASSEMBLY Mar 17, 12 Apr 10, 14 ,
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,

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Patents Filed in This Class - By Year

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