E21D

Follow

Stats

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)

more results

Recent Patents

Not Available
Patent #TitleFiling DateIssue DatePatent Owner
9624770 Self-undercut anchor system Jun 25, 14 Apr 18, 17 , Not available
9617703 Ground anchor system and method Mar 20, 14 Apr 11, 17 LIPSKER & CO. ENGINEERING SERVICES (1975) LTD., LIPSKER & CO. ENGINEERING SERVICES (1975) LTD.
9617705 Retainment wall for underground mine and method of construction May 13, 15 Apr 11, 17 STURDA, INC, STURDA, INC; HEINTZMANN CORPORATION (USA);
9617852 Mining systems Apr 17, 15 Apr 11, 17 SENECA INDUSTRIES INC., SENECA INDUSTRIES INC.
9617853 Auxiliary tunneling apparatus Jun 11, 13 Apr 11, 17 KOMATSU LTD., KOMATSU LTD.
9611738 Ventilated mine roof support Aug 27, 14 Apr 04, 17 BURRELL MINING PRODUCTS, INC., BURRELL MINING PRODUCTS INC.
9611739 Inflatable tunnel seal May 28, 10 Apr 04, 17 BURRELL MINING PRODUCTS, INC., Not available
9605539 Advancing ram pin retention device Feb 11, 15 Mar 28, 17 JOY MM DELAWARE, INC., JOY MM DELAWARE, INC.

more results

Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2017/0107,815 FRICTION BOLT Jun 08, 15 Apr 20, 17 , Not available
2017/0107,816 CABLE BOLT Feb 17, 15 Apr 20, 17 , MINOVA INTERNATIONAL LIMITED
2017/0108,016 SLEEVE HOLDER FOR A HYDRAULIC CYLINDER Mar 27, 15 Apr 20, 17 , CATERPILLAR GLOBAL MINING EUROPE GMBH
2017/0101,868 ROLLER CUTTER ARRANGEMENT AND CUTTING WHEEL EQUIPPED WITH SAID ROLLER CUTTER ARRANGEMENT Jun 15, 15 Apr 13, 17 , Not available
2017/0096,895 DEVICE FOR CONNECTING THE STRUCTURAL ELEMENTS OF RIBS AND RETICULAR STRUCTURES May 28, 15 Apr 06, 17 OFFICINE MACCAFERRI ITALIA S.R.L.,
2017/0096,896 RIB FOR SUPPORTING AND CONSOLIDATING AN EXCAVATION AND METHOD FOR INSTALLING A STRUCTURE TO SUPPORT AND CONSOLIDATE AN EXCAVATION May 28, 15 Apr 06, 17 OFFICINE MACCAFERRI ITALIA S.R.L.,

more results

Patents Issued To Date - By Filing Year

Average Time to Issuance

We are sorry but your current selection exceeds the maximum number of follows () for this membership level. Upgrade to our Level for up to follows!

UPGRADE MEMBERSHIP CANCEL
We are sorry but Dashboard Viewer is not able to follow the Technologies/Sub-Technologies.