| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 08/31/2000 | WO2000050730A1 Device for simultaneously drilling and casing |
| 08/31/2000 | WO2000050729A2 Mills for wellbore operations |
| 08/31/2000 | WO2000050728A1 Method and apparatus for determining potential for drill bit performance |
| 08/31/2000 | WO2000050358A1 Concrete comprising an elastic substance and pile made of such a concrete |
| 08/31/2000 | DE10001841A1 Holder for cutting tool which has shaft with outer diameter and tool fixture flange of one-piece construction with shaft, outer diameter of fixture flange being greater than that of shaft |
| 08/31/2000 | CA2362280A1 Advancing device for boring sections of roadway, tunnels or the like |
| 08/30/2000 | EP0828915A4 Rotary cone drill bit modular arm |
| 08/30/2000 | EP0775245A4 Modular rotary drill bit |
| 08/30/2000 | CN2393994Y Coring bits with superhard composite edges |
| 08/29/2000 | US6109377 Rotatable cutting bit assembly with cutting inserts |
| 08/29/2000 | US6109376 Face seal having strain induced face geometry |
| 08/29/2000 | US6109375 Method and apparatus for fabricating rotary cone drill bits |
| 08/24/2000 | WO2000049265A1 Underreamer with turbulence cleaning mechanism |
| 08/24/2000 | WO2000048789A1 Method for forming a superabrasive polycrystalline cutting tool with an integral chipbreaker feature |
| 08/24/2000 | DE19906722A1 Reduction of concrete components, especially heavy components such as nuclear reactor shielding, comprises using core drilling unit to drill overlapping holes |
| 08/23/2000 | EP1029622A2 Stone drill |
| 08/23/2000 | CN2392909Y Diamond/hard alloy compounded sheet |
| 08/22/2000 | US6106200 Process and device for simultaneously drilling and lining a hole |
| 08/22/2000 | US6105694 Diamond enhanced insert for rolling cutter bit |
| 08/22/2000 | US6105693 Partially enhanced percussive drill bit |
| 08/17/2000 | WO2000047860A2 Directional drilling apparatus |
| 08/16/2000 | EP1027521A1 Earth-boring bit having cutter with replaceable kerf ring with contoured inserts |
| 08/16/2000 | EP1027520A1 Pre-orienting nozzle |
| 08/16/2000 | EP1027519A1 Apparatus for directional drilling |
| 08/16/2000 | CN2391983Y Three teeth roller bit |
| 08/15/2000 | USRE36817 Method and apparatus for drilling and enlarging a borehole |
| 08/15/2000 | US6102634 Masonry drill bit |
| 08/15/2000 | US6102143 Shaped polycrystalline cutter elements |
| 08/15/2000 | US6102142 Drilling tool with shock absorbers |
| 08/15/2000 | US6102140 Inserts and compacts having coated or encrusted diamond particles |
| 08/10/2000 | WO2000015947A9 Mining machine and mining method |
| 08/09/2000 | EP1025335A1 Small disc cutters, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters |
| 08/09/2000 | EP1025334A2 Directional drilling tool |
| 08/08/2000 | US6100494 Insert for an abrasive tool |
| 08/08/2000 | US6098731 Drill bit compact with boron or beryllium for fracture resistance |
| 08/08/2000 | US6098730 Earth-boring bit with super-hard cutting elements |
| 08/08/2000 | US6098729 Preform cutting elements for rotary drill bits |
| 08/08/2000 | US6098728 Rock bit nozzle arrangement |
| 08/08/2000 | CA2163686C Tool bit with carrier member and cutting member |
| 08/03/2000 | WO2000045029A2 A method for setting a packer in a well bore, and a packer |
| 08/03/2000 | WO2000045025A1 Apparatus and method for mitigating wear in downhole tools |
| 08/02/2000 | EP1023520A1 Partially enhanced drill bit |
| 08/02/2000 | EP1023519A1 Rock bit with improved nozzle placement |
| 08/02/2000 | EP0883730A4 A drilling apparatus |
| 08/02/2000 | EP0837979A4 Drill bit retainer for a down hole hammer assembly |
| 08/01/2000 | US6095265 Impregnated drill bits with adaptive matrix |
| 08/01/2000 | US6095264 Rolling cutter drill bit with stabilized insert holes and method for making a rolling cutter drill bit with stabilized insert holes |
| 08/01/2000 | US6095262 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation |
| 08/01/2000 | US6095261 Drill bit reverse circulation apparatus and method |
| 07/27/2000 | WO2000043628A2 Rotary-type earth drilling bit, modular gauge pads therefor and methods of testing or altering such drill bits |
| 07/27/2000 | DE10002314A1 Work apparatus for production of bore posts involves two so-called bore worms with spiral arrangement with dimensioning, material choice and formation necessary for accommodating forces for function and pushable axially in one another |
| 07/26/2000 | EP1021639A1 A cutting bit assembly for impinging an earth strata |
| 07/26/2000 | EP1021579A1 A ROTARY EARTH STRATA PENETRATING TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| 07/26/2000 | EP0776409B1 Integral drilling tool bit |
| 07/26/2000 | CN2389231Y Screw drill motor test platform |
| 07/25/2000 | US6092613 Rotary drill bits |
| 07/25/2000 | US6092612 Rotary drilling systems |
| 07/25/2000 | US6092611 Encapsulated elastomeric relief valve |
| 07/20/2000 | DE19900906A1 Rotating chisel for masonry and rock has an eccentric drive with the impact drive for the tools varied to match the hardness of the material being worked |
| 07/19/2000 | CN1054669C Bit of preventing gear wheel from dropping off |
| 07/18/2000 | US6089336 Rotary drill bits |
| 07/18/2000 | US6089334 Invertible auger |
| 07/18/2000 | US6089123 Structure for use in drilling a subterranean formation |
| 07/13/2000 | WO2000040832A1 Rotatable cutting bit assembly with cutting inserts |
| 07/12/2000 | EP1017924A1 Claw tooth rotary bit |
| 07/12/2000 | CN1260033A Encapsulated elastomeric relief valve |
| 07/05/2000 | EP1015731A1 Cutting insert and milling tool for use in a wellbore |
| 07/05/2000 | EP1015727A1 Drilling tool |
| 07/05/2000 | EP1015180A1 Abrasive tools with patterned grit distribution and method of manufacture |
| 07/05/2000 | EP1014877A1 Titanium molybdenum hafnium alloys for medical implants and devices |
| 07/05/2000 | CN2386182Y Antiseize drilling bit for putting explosive in blasthole on gravel layer and shifting sand |
| 07/05/2000 | CN2386181Y Nozzle for oil drilling bit |
| 07/05/2000 | CN2386180Y Tooth form for roller bit |
| 07/05/2000 | CN2386179Y Roller bit with low nozzle holder |
| 07/05/2000 | CN2386178Y Mixed drilling bit |
| 07/05/2000 | CN1259189A Drilling tool |
| 07/05/2000 | CN1258787A Core-storing double circular auger |
| 07/04/2000 | US6083570 Applying to a substrate a coating and an overcoating of diamond by vapor deposition |
| 07/04/2000 | US6082474 Elements faced with superhard material |
| 07/04/2000 | US6082473 Drill bit including non-plugging nozzle and method for removing cuttings from drilling tool |
| 07/04/2000 | US6082472 Earth displacement drill |
| 07/04/2000 | US6082471 Horizontal boring apparatus used to install a pipeline |
| 07/04/2000 | US6082223 Predominantly diamond cutting structures for earth boring |
| 06/29/2000 | WO2000037765A1 Rotary drilling bit |
| 06/29/2000 | CA2686423A1 Method and apparatus for drilling and lining a wellbore |
| 06/29/2000 | CA2354517A1 Rotary drilling bit |
| 06/28/2000 | EP1013876A2 Face seal for rock bits |
| 06/28/2000 | EP1012438A1 Gage pad arrangements for rotary drill bits |
| 06/28/2000 | EP1012436A1 Drilling tool for down-the-hole drilling, reamer means and body element for use in the tool |
| 06/28/2000 | CN2385073Y Vacuum spiral drilling tool for taking gas |
| 06/28/2000 | CN2385072Y Hard alloy sheet for drill bit |
| 06/28/2000 | CN2385071Y New type roller bit rolling bearing |
| 06/28/2000 | CN1258334A Drilling tool, especially rock drill |
| 06/27/2000 | US6079507 Drill bits with enhanced hydraulic flow characteristics |
| 06/27/2000 | CA2173916C Layered composite carbide product and method of manufacture |
| 06/22/2000 | WO2000036264A1 Tool component |
| 06/21/2000 | EP1010854A1 Drilling machine |
| 06/21/2000 | EP0815344B1 Whipstock |
| 06/21/2000 | CN1257562A Drilling tool |
| 06/20/2000 | US6077591 Elements faced with superhard material |