| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 08/03/2005 | CN2714806Y Multi-segment partial stack combined anchor head device |
| 08/03/2005 | CN2714805Y Coal drift profiled supporting strip |
| 07/28/2005 | WO2005068779A1 Lock bolt of high strength steel pipe and method of manufacturing the same |
| 07/27/2005 | CN1644878A Glass fibre reinforced plastics rockbolts and manufacture thereof |
| 07/21/2005 | US20050158127 Yielding strata bolt |
| 07/07/2005 | US20050147474 Friction stabilizer with tabs |
| 07/06/2005 | CN2707966Y Resistance increasing high strength pressured anchor |
| 06/30/2005 | WO2005059309A2 Coated mining bolt |
| 06/30/2005 | WO2005058773A1 Toughened polyethylene terephthalate |
| 06/30/2005 | CA2850200A1 Coated mining bolt |
| 06/30/2005 | CA2549683A1 Coated mining bolt |
| 06/29/2005 | EP1546508A1 Rock bolt post grouting apparatus |
| 06/29/2005 | CN2706583Y Anchoring bolt |
| 06/28/2005 | CA2394527C Packaging arrangements for rock stabilizer sets |
| 06/23/2005 | US20050134104 Coated mining bolt |
| 06/22/2005 | CN2705295Y Processing device for anchor rod |
| 06/16/2005 | DE10354729A1 Gleitanker Sliding anchor |
| 06/15/2005 | CN2704686Y Non-threaded self-locking non-metallic rock on tail |
| 06/09/2005 | WO2005052274A1 Threaded deformed bar and method for making the bar |
| 06/09/2005 | US20050123361 Method and apparatus for anchoring a mine roof bolt |
| 06/09/2005 | US20050123360 Apparatus for ground support |
| 06/09/2005 | CA2547118A1 Threaded deformed bar and method for making the bar |
| 06/01/2005 | CN1621638A Threaded deformed bar and method for making the bar |
| 05/31/2005 | CA2154901C Means for anchoring a rock bolt made of concrete steel in a drill hole |
| 05/26/2005 | WO2005047653A1 Modular rock bolt system |
| 05/26/2005 | WO2005047652A1 Self-drilling rock bolt |
| 05/26/2005 | WO2005047651A1 Jointed self-drilling rock bolt |
| 05/26/2005 | WO2005047650A1 Tube-formed expandable rock bolt and expansion fluid delivering nozzle |
| 05/26/2005 | WO2005047648A1 Lock bolt made of steel pipe |
| 05/26/2005 | US20050108971 Threaded deformed reinforcing bar and method for making the bar |
| 05/25/2005 | EP1533472A1 Process for rock bolting |
| 05/25/2005 | EP1533471A1 Yieldable rock anchor |
| 05/25/2005 | CN2702056Y 锚具 Anchorage |
| 05/25/2005 | CN1619106A Flexible injection anchor rod |
| 05/18/2005 | CN2700566Y Resin fiberglass-reinforced plastic pallet for mine tunnel support |
| 05/18/2005 | CN2700565Y Fiberglass-reinforced plastic rod of resin rockbolt |
| 05/18/2005 | CN2700564Y Gasket matchable to rockbolt |
| 05/18/2005 | CN2700563Y Detection gasket matchable to rockbolt |
| 05/17/2005 | US6893188 Continuous method of realization of works underground, tunnels and excavations in general with works of consolidation, permeabilization and drainage obtained through guided perforations |
| 05/06/2005 | WO2005047649A1 Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt |
| 05/06/2005 | WO2005040557A1 Rock bolt |
| 05/06/2005 | WO2005040556A1 Anchor device with an elastic expansion sleeve |
| 05/06/2005 | CA2553610A1 Anchor device with an elastic expansion sleeve |
| 05/06/2005 | CA2542261A1 Method and device for installing a self-drilling expandable rock bolt and a self-drilling expandable rock bolt |
| 05/04/2005 | CN1200199C A pin timbering process and sectionalized hollow and injecting stay bolt thereof |
| 04/27/2005 | EP1187958B1 Concrete structure comprising anchor rods and anchor rod |
| 04/20/2005 | CN1198045C Making process of integrated forming rock anchoring screw bolt with center hole |
| 04/19/2005 | US6881015 Wedge barrel for a mine roof cable bolt |
| 04/12/2005 | CA2144041C Rockbolt |
| 04/07/2005 | WO2005031117A1 Friction stabilizer with tabs |
| 04/02/2005 | CA2444192A1 Mine roof bolt assembly and fastener for use therein |
| 03/31/2005 | US20050069388 Friction stabilizer with tabs |
| 03/31/2005 | US20050067879 Combination panline and utility drilling or bolting unit |
| 03/30/2005 | CA2483081A1 Friction stabilizer with tabs |
| 03/23/2005 | CN2687643Y Portable roofbolt dynameter |
| 03/22/2005 | US6869147 Method and system for mining hydrocarbon-containing materials |
| 03/17/2005 | DE10336043A1 Verbundanker Xings |
| 03/16/2005 | CN1594835A Three dimensional anchor cable bolting technology in heading |
| 03/10/2005 | US20050053428 Rock stabilizer |
| 03/09/2005 | CN2683852Y Recoverable type wedge shaped anchor fixing type stock |
| 03/09/2005 | CN1590707A Rock anchor |
| 03/08/2005 | US6863476 Mobile system for manufacturing and installing reinforcing members |
| 03/03/2005 | WO2005019593A2 Helical drag bit and method of using the same |
| 03/03/2005 | US20050047874 Bonding anchor |
| 03/03/2005 | CA2536237A1 Drilling apparatus, method, and system |
| 03/02/2005 | CN1587646A Quick water blocking device and its water blocking method in anchor cable hole |
| 03/02/2005 | CN1587643A Digging method for shallow underground hole |
| 02/24/2005 | US20050042037 Yielding rock bolt |
| 02/24/2005 | US20050039952 Drilling apparatus, method, and system |
| 02/23/2005 | CN2680860Y Easily hauled anchor cable rigging |
| 02/23/2005 | CN2680859Y 可回收锚杆 Recoverable bolt |
| 02/23/2005 | CN2680858Y Waney metal rod body for anchoring |
| 02/23/2005 | CN1584294A Rockbolt, machining process and apparatus thereby |
| 02/23/2005 | CN1584293A Mechanical resin rockbolt with agitatnig and fastening mixed primary finish |
| 02/16/2005 | CN1580492A Combined anchor bolt |
| 02/16/2005 | CN1189643C Mine roadway steel reinforcement support anchoring method |
| 02/11/2005 | CA2439397A1 Mine roof bolt assembly |
| 02/10/2005 | WO2005012691A1 Improved cable bolt |
| 02/10/2005 | US20050031419 Roof bolts for use in mines, a method for their production and method for their installation |
| 02/09/2005 | CN2677618Y Whole prestressed metal rockbolt |
| 02/03/2005 | US20050025578 Rock anchor |
| 02/02/2005 | CN1187515C Jacket tube for drilling and anchoring device |
| 01/26/2005 | EP1499792A1 Method for production of a mining metal plug |
| 01/26/2005 | CN2674097Y Safety, composite high strength glass fiber reinforced plastic tube |
| 01/26/2005 | CN2674096Y High strength and equivalent strength roof bolt |
| 01/26/2005 | CN1186523C Roofbolt |
| 01/26/2005 | CN1186521C Roofbolt |
| 01/20/2005 | US20050013672 Roof bolt bearing plate and method for an underground mine |
| 01/17/2005 | CA2433932A1 A self centering cable bolt |
| 01/13/2005 | WO2005003609A1 Hydraulic fluid inlet valve |
| 01/13/2005 | US20050008438 Synthetic deformed bars and retaining walls |
| 01/05/2005 | DE202004016655U1 Rohrverbindung und Vorrichtung zur Herstellung einer Rohrverbindung Pipe joint and apparatus for manufacturing a pipe joint |
| 12/15/2004 | EP1224375B1 Self drilling roof bolt |
| 12/15/2004 | CN2663656Y Adhesive type recoverable plastic anchor stock |
| 12/09/2004 | WO2004106700A1 Rockbolt |
| 12/09/2004 | US20040245023 Drill bit and drill tip having a tip-locating structure |
| 12/09/2004 | CA2523185A1 Rock bolt |
| 12/02/2004 | US20040237431 Disjointable fixing apparatus of tension member and removal method of tension member |
| 12/01/2004 | CN2660128Y Flexible shear anchor arm |
| 11/25/2004 | US20040231890 Rock bolts with expandable element |