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
8,851,802 Rock bolt Apr 30, 08 Oct 07, 14 SANDVIK INTELLECTUAL PROPERTY AB, SANDVIK INTELLECTUAL PROPERTY AB
8,851,804 Pumpable support with cladding Apr 21, 11 Oct 07, 14 MICON, MICON
8,851,805 Telescopic mine roof support Aug 30, 12 Oct 07, 14 BURRELL MINING PRODUCTS, INC., BURRELL MINING PRODUCTS INC.
8,850,750 Rapidly-deployable lightweight load resisting arch system Jan 26, 05 Oct 07, 14 UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES, UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2014/0321,924 DETACHABLE BOLT Apr 25, 13 Oct 30, 14 , Not available
2014/0318,263 TENSION METER FOR ANCHOR ROD WITH CONSTANT RESISTANCE AND LARGE DEFORMATION Jun 13, 11 Oct 30, 14 , CHINA UNIVERSITY OF MINING & TECHNOLOGY (BEIJING)
2014/0314,490 PUMPABLE MINE VENTILATION STRUCTURE Feb 07, 14 Oct 23, 14 ABC INDUSTRIES, INC.,
2014/0314,503 Grouting method for anchoring with polymer Apr 19, 13 Oct 23, 14 HENAN POLYTECH INFRASTRUCTURE REHABILITATION LTD.,
2014/0308,081 TENSIONABLE ELONGATED BOLT DISPOSED WITH A SLEEVE AND METHOD OF USE THEREOF Apr 03, 14 Oct 16, 14 DSI UNDERGROUND SYSTEMS, INC.,
2014/0301,787 Mine Seal and Method of Construction for High Resistance to Transverse Loads May 28, 14 Oct 09, 14 E. DILLON & COMPANY,

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