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
9,328,610 Filling of partitioned film packages for anchoring systems for mines Oct 26, 11 May 03, 16 , J-LOK CO.

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2016/0115,788 Guide System Jun 06, 14 Apr 28, 16 , Not available
2016/0115,789 Arrangement And Method For Positioning Cartridges For A Rock Grouting Equipment Jun 25, 14 Apr 28, 16 ATLAS COPCO ROCK DRILLS AB,
2016/0101,941 GAS CONTAINMENT SYSTEM Oct 12, 15 Apr 14, 16 ,
2016/0101,942 CONTAINMENT SYSTEMS AND METHODS WITH REDUCED FRICTION Oct 12, 15 Apr 14, 16 TOTAL E&P USA OIL SHALE, LLC,
2016/0102,552 TEMPORARY ROOF SUPPORT SYSTEM WITH ANTI-ROTATION FEATURE Dec 17, 15 Apr 14, 16 CATERPILLAR GLOBAL MINING AMERICA LLC,
2016/0097,278 WATERPROOFING SYSTEM FOR EXPOSED ROCK SURFACES Oct 06, 15 Apr 07, 16 ,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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