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
9731897 Gas containment system Oct 12, 15 Aug 15, 17 , Red Leaf Resources, Inc.
9732612 Barrier forming apparatus Sep 04, 14 Aug 15, 17 , Not available
9732613 Roller cutter arrangement and cutting wheel equipped with said roller cutter arrangement Jun 15, 15 Aug 15, 17 , HERRENKNECHT AKTIENGESELLSCHAFT
9732614 Device, method and system for loading fixatives for rock bolts Nov 08, 13 Aug 15, 17 , GAZMICK PTY LTD
9708809 Anchor and method of using the same Mar 14, 14 Jul 18, 17 BENNETT, DARREN BRUCE, Not available

more results

Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2017/0226,733 FIRE RESISTANT TUNNEL EXPANSION JOINT SYSTEMS Apr 24, 17 Aug 10, 17 EMSEAL JOINT SYSTEMS LTD.,
2017/0218,757 ROCK BREAKING SEISMIC SOURCE AND ACTIVE SOURCE THREE-DIMENSIONAL SEISMIC COMBINED ADVANCED DETECTION SYSTEM USING TUNNEL BORING MACHINE May 07, 15 Aug 03, 17 SHANDONG UNIVERSITY,
2017/0211,384 High-Frequency Vibrating Transverse Drum Cutter Head, And Drum Cutter Machine And Tunnel Boring Machine Therewith Aug 03, 15 Jul 27, 17 Tang, Zhongsheng,
2017/0211,385 SPRING SUSPENSION CLIP Jan 21, 16 Jul 27, 17 ,
2017/0211,386 ROCK BOLT WITH AN INTEGRALLY FORMED WEDGE FORMATION AND A METHOD OF MANUFACTURING SAME Aug 25, 15 Jul 27, 17 NCM INNOVATIONS (PTY) LTD,
2017/0204,666 ROD MANIPULATOR FOR A MINING DRILL RIG Mar 09, 15 Jul 20, 17 SANDVIK INTELLECTUAL PROPERTY AB,
2017/0204,676 ROOF DRILL BIT AND ASSOCIATED COUPLER Jan 19, 16 Jul 20, 17 KENNAMETAL INC.,

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.