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
9,512,720 Cable bolt Sep 13, 13 Dec 06, 16 , FCI HOLDINGS DELAWARE, INC.
9,506,250 Assembly for connecting rebar segments Feb 11, 14 Nov 29, 16 , Not available
9,506,344 Tunneling apparatus May 31, 12 Nov 29, 16 VERMEER MANUFACTURING COMPANY, VERMEER MANUFACTURING COMPANY
9,506,345 Method of operating a rock bolting machine Dec 24, 14 Nov 29, 16 BRANDT ENGINEERED PRODUCTS LTD., BRANDT ENGINEERED PRODUCTS LTD.
9,499,719 Encapsulated activator and its use to trigger a gelling system by physical means Mar 08, 12 Nov 22, 16 RHODIA OPERATIONS, RHODIA OPERATIONS
9,499,951 Self-drilling rock bolt assembly and method of installation May 27, 14 Nov 22, 16 OKA ROCK BOLT TECHNOLOGIES PTY LIMITED, OKA ROCK BOLT TECHNOLOGIES PTY LIMITED
9,500,077 Comprehensive advanced geological detection system carried on tunnel boring machine Jan 26, 14 Nov 22, 16 SHANDONG UNIVERSITY, GOVERNORS OF THE SHANDONG UNIVERSITY
9,500,078 Segment roundness measuring device and segment roundness measuring method Nov 12, 13 Nov 22, 16 HITACHI ZOSEN CORPORATION, HITACHI ZOSEN CORPORATION
9,500,079 Method and control system for a mining vehicle and a mining vehicle May 27, 13 Nov 22, 16 SANDVIK MINING AND CONSTRUCTION OY, SANDVIK MINING & CONSTRUCTION OY
9,494,036 Unmanned intelligent mining machine Jun 19, 14 Nov 15, 16 SANDVIK MINING AND CONSTRUCTION OY, Not available

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2016/0356,014 GROUND ANCHOR AND METHOD OF USING A GROUND ANCHOR May 31, 16 Dec 08, 16 , Not available
2016/0348,505 METHOD AND SYSTEM OF COAL MINE ROOF STABILIZATION Aug 11, 16 Dec 01, 16 , REI, INC.
2016/0341,041 MINE VEHICLE AND METHOD OF DETERMINING POSITION AND DIRECTION OF MONITORED OBJECT Jan 14, 15 Nov 24, 16 SANDVIK MINING AND CONSTRUCTION OY,
2016/0333,543 RETAINMENT WALL FOR UNDERGROUND MINE AND METHOD OF CONSTRUCTION May 13, 15 Nov 17, 16 STURDA, INC,
2016/0326,873 Locally Anchored Self-Drilling Hollow Rock Bolt May 06, 16 Nov 10, 16 NORMET INTERNATIONAL, LTD.,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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