E21D

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Description

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)

Subclasses

Not Available
Subclass Title
1/00 Sinking shafts
1/02 Sinking shafts by hand
1/03 Sinking shafts mechanically (E21D 1/08 takes precedence)
1/04 Sinking shafts mechanically (E21D 1/08 takes precedence) with grabs
1/06 Sinking shafts mechanically (E21D 1/08 takes precedence) with shaft-boring cutters (drilling machines E21B)

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Recent Patents

Not Available
Patent #TitleFiling DateIssue DatePatent Owner
8,936,415 Roof support sheet handling for underground mines Feb 17, 12 Jan 20, 15 JOY MM DELAWARE, INC., JOY MM DELAWARE, INC.
8,931,959 Roller bearing with at least two rows of rolling elements, in particular for a tunneler Oct 11, 13 Jan 13, 15 AKTIEBOLAGET SK, AKTIEBOLAGET SK
8,926,229 Trench box dewatering system Sep 13, 11 Jan 06, 15 AKTIEBOLAGET SK, Not available
8,926,230 Tension cable bolt Oct 11, 12 Jan 06, 15 MINOVA USA, INC., MINOVA USA, INC.

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2015/0028,657 CUTTER FOR SHAFT AND/OR TUNNEL BORING Jan 25, 13 Jan 29, 15 , Not available
2015/0023,740 Ground and Rock Anchor Jul 15, 14 Jan 22, 15 F.J. ASCHWANDEN AG,
2015/0016,894 SETTING TOOL AND METHOD FOR INSTALLING AN ANCHOR ROD Jan 29, 13 Jan 15, 15 HILTI AKTIENGESELLSCHAFT,
2015/0010,357 METHOD FOR STORING CARBON DIOXIDE COMPOSITIONS IN SUBTERRANEAN GEOLOGICAL FORMATIONS AND AN ARRANGEMENT FOR USE IN SUCH METHODS Jun 30, 11 Jan 08, 15 STATOIL PETROLEUM AS,
2015/0007,960 Column Buffer Thermal Energy Storage Jul 02, 14 Jan 08, 15 ,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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