| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/13/1995 | WO1995018892A1 Improvements in or relating to apparatus for use in forming piles |
| 07/11/1995 | US5431239 Stud design for drill bit cutting element |
| 07/11/1995 | US5431238 Drilling tool for use in constructing large diameter piles, ventilating shafts and other similar mining works |
| 07/11/1995 | CA1336285C Hard facing for milled tooth rock bits |
| 07/11/1995 | CA1336284C Auger planter method |
| 07/05/1995 | CN2202796Y Flexible hole expanding drill |
| 07/04/1995 | US5429201 Drill bit with improved rolling cutter tooth pattern |
| 07/04/1995 | US5429200 Rotary drill bit with improved cutter |
| 07/04/1995 | US5429199 Cutting bit and cutting insert |
| 07/04/1995 | US5429198 Down reaming apparatus having hydraulically controlled stabilizer |
| 07/04/1995 | US5429187 Milling tool and operations |
| 06/28/1995 | EP0659510A1 Tool component |
| 06/27/1995 | US5427475 Trenchless pipeline installation method and apparatus employing corrective alignment of pilot hole |
| 06/27/1995 | US5427191 Auger head assembly and method of drilling hard earth formations |
| 06/27/1995 | CA2085567C Cutter blades for rotary tubing tools |
| 06/22/1995 | WO1995016530A1 Polycrystalline diamond composite cutting insert for attachment to a tool |
| 06/21/1995 | EP0658682A2 Gage cutting insert for roller bit |
| 06/20/1995 | US5425423 Well completion tool and process |
| 06/20/1995 | US5425417 Wellbore tool setting system |
| 06/20/1995 | US5425288 Manufacture of rotary drill bits |
| 06/20/1995 | CA1335988C Drill bit with integrally forged stabilizer |
| 06/14/1995 | EP0657617A1 Rock drill bit |
| 06/14/1995 | EP0657616A1 Auger device for piles foundations |
| 06/13/1995 | US5423719 Abrasive tools |
| 06/13/1995 | US5423389 Curved drilling apparatus |
| 06/08/1995 | DE4341054A1 Rock drilling tool esp. for percussive drilling |
| 06/07/1995 | EP0656458A2 Superhard cutting element having reduced surface roughness |
| 06/07/1995 | CN1028733C Drill bit for producing cylindrical drilled holes |
| 06/06/1995 | US5421425 Cutting elements for rotary drill bits |
| 06/06/1995 | US5421424 Bowed out chisel insert for rock bits |
| 06/06/1995 | US5421423 Rotary cone drill bit with improved cutter insert |
| 06/06/1995 | US5421422 Roller cutter mount for tunneling machine |
| 06/06/1995 | CA1335812C Excavating tooth for an earth auger |
| 05/31/1995 | EP0655549A1 Improvements in or relating to cutting elements for rotary drill bits |
| 05/31/1995 | EP0655548A1 Improvements in or relating to cutting elements for rotary drill bits |
| 05/31/1995 | EP0655547A2 Rock drill bit with helical conveying portion |
| 05/30/1995 | US5419211 Device for taking soil samples |
| 05/24/1995 | EP0654580A2 Twist drill |
| 05/24/1995 | DE4408514C1 Drilling tool for producing holes in ground |
| 05/24/1995 | CN1102867A Impact rotating extrusion sealing drill bit and drilling method |
| 05/23/1995 | US5417526 Hollow crown drill with end face cutting members |
| 05/23/1995 | US5417475 Tool comprised of a holder body and a hard insert and method of using same |
| 05/23/1995 | US5417296 Rotary drill bits |
| 05/23/1995 | US5417292 Large diameter rock drill |
| 05/18/1995 | WO1995013452A1 Improved rotary roller reamer |
| 05/18/1995 | WO1995013152A1 Method and system of trajectory prediction and control using pdc bits |
| 05/18/1995 | DE4401915C1 Hammer drill with plate |
| 05/17/1995 | EP0653544A2 Twist drill |
| 05/17/1995 | CN1102685A Drill bit with improved cutter sizing pattern |
| 05/16/1995 | US5415244 Conical inserts for rolling cone rock bits |
| 05/16/1995 | US5415243 Rock bit borhole back reaming method |
| 05/10/1995 | CA2135154A1 Matrix diamond drag bit with pcd cylindrical cutters |
| 05/09/1995 | US5413869 Tungsten carbide core with cobalt, nickel or iron binder |
| 05/09/1995 | US5413183 For reaming an opening in an earth formation |
| 05/09/1995 | CA2072302C Rock drill bit and method of making same |
| 05/09/1995 | CA2029733C Reamer |
| 05/04/1995 | WO1995012050A1 Ground displacement auger head for making piles in the ground |
| 05/04/1995 | WO1995007404A3 Apparatus for use in a wellbore |
| 05/04/1995 | DE4337340A1 Reaming bit for drainage filter wells |
| 05/04/1995 | CA2174119A1 Ground displacement auger head for making piles in the ground |
| 05/04/1995 | CA2134396A1 Diamond/boron nitride coated excavating tool cutting insert |
| 05/03/1995 | EP0651133A2 Diamond/boron nitride coated excavating tool cutting insert |
| 05/02/1995 | CA1335449C Drilling equipment |
| 05/02/1995 | CA1335448C Flexible drill string member especially for use in directional drilling |
| 04/26/1995 | EP0626041A4 Masonry anchors. |
| 04/25/1995 | US5409060 Wellbore tool orientation |
| 04/20/1995 | WO1995010684A1 Negative pressure vortex nozzle |
| 04/20/1995 | WO1995010683A1 Down reaming apparatus |
| 04/20/1995 | CA2173870A1 Down reaming apparatus |
| 04/20/1995 | CA2173733A1 Negative pressure vortex nozzle |
| 04/18/1995 | US5407022 For drilling a borehole |
| 04/18/1995 | US5407021 Down-the-hole hammer drill having reverse circulation |
| 04/15/1995 | CA2108405A1 Encapsulation of segmented diamond compact |
| 04/12/1995 | EP0334934B1 Soil auger |
| 04/11/1995 | US5405221 Gyro-stabilized tool bit with wide, removable mounting adaptor for use in a wide mouth chuck |
| 04/11/1995 | CA1335198C Well reamer |
| 04/04/1995 | US5403130 For creation of breaches in concrete or masonry |
| 04/04/1995 | US5402858 O-ring seal for rock bit bearings |
| 04/04/1995 | US5402856 Anti-whirl underreamer |
| 04/04/1995 | CA1335099C Drill bit with cemented carbide inserts |
| 03/30/1995 | WO1995008692A1 A cutter for a boring head, a device for accommodating thermally expanding grease, and a method of greasing bearings in a cutter |
| 03/30/1995 | WO1995008691A1 Disc cutter |
| 03/29/1995 | CN1100683A Knife head for material removing tool |
| 03/28/1995 | US5400861 Rotatable cutting bit assembly |
| 03/23/1995 | DE4332113A1 Boring implement for making bores in earth with different soil classes |
| 03/22/1995 | EP0643792A1 Rolling cone bit with wear resistant insert |
| 03/22/1995 | CN1027986C Screw driller rotor by surface nitrogen treatment |
| 03/21/1995 | CA2132284A1 Diamond drag bit cutting elements |
| 03/21/1995 | CA2102349A1 Disc cutter |
| 03/21/1995 | CA1334843C Auger planter |
| 03/16/1995 | WO1995007404A2 Apparatus for use in a wellbore |
| 03/15/1995 | EP0643194A2 Asymmetrical PDC cutter for a drilling bit |
| 03/08/1995 | EP0641634A1 Apparatus for forming kerfs in the wall of a borehole |
| 03/08/1995 | CN2191272Y Wear-proof twist bit rod |
| 03/07/1995 | US5394952 Core cutting rock bit |
| 03/07/1995 | CA2048689C Self-drilling fastening |
| 03/02/1995 | WO1995006187A1 Cutter head device for propeller of small diameter pipe |
| 03/01/1995 | CN1099456A Automatic pressure unit |
| 03/01/1995 | CN1027768C Rock drill bit and method of making same |
| 02/28/1995 | US5392868 Directional multi-blade boring head |