Issued Patents All Time
Showing 51–75 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074747 | Stabilizer assemblies with bearing pad locking structures and tools incorporating same | Kevin G. Kidder, Khoi Q. Trinh | 2011-12-13 |
| 8047304 | Expandable reamer for subterranean boreholes and methods of use | — | 2011-11-01 |
| 8028767 | Expandable stabilizer with roller reamer elements | Timothy K. Marvel | 2011-10-04 |
| 8020635 | Expandable reamer apparatus | — | 2011-09-20 |
| 7997354 | Expandable reamers for earth-boring applications and methods of using the same | Scott Shiquiang Shu, Les T. Shale, Mark E. Morris, Mark R. Kizziar, Anton F. Zahradnik | 2011-08-16 |
| 7900717 | Expandable reamers for earth boring applications | Scott Shiquiang Shu, Anton F. Zahradnik, J. Lindley Baugh | 2011-03-08 |
| 7882905 | Stabilizer and reamer system having extensible blades and bearing pads and method of using same | Les T. Shale | 2011-02-08 |
| 7721823 | Moveable blades and bearing pads | — | 2010-05-25 |
| 7681666 | Expandable reamer for subterranean boreholes and methods of use | Mark R. Kizziar | 2010-03-23 |
| 7594552 | Expandable reamer apparatus for enlarging boreholes while drilling | Kelly D. Ireland, Daryl L. Pritchard | 2009-09-29 |
| 7549485 | Expandable reamer apparatus for enlarging subterranean boreholes and methods of use | Kelly D. Ireland, Robert A. Laing, Daryl L. Pritchard, James L. Overstreet, Greg W. Presley +3 more | 2009-06-23 |
| 7308937 | Expandable reamer apparatus for enlarging boreholes while drilling and methods of use | Kelly D. Ireland, Anurag Gautam, Robert A. Laing, Matthew Mumma, Daryl L. Pritchard | 2007-12-18 |
| 7036611 | Expandable reamer apparatus for enlarging boreholes while drilling and methods of use | Kelly D. Ireland, Anurag Gautam, Robert A. Laing, Matthew Mumma, Daryl L. Pritchard | 2006-05-02 |
| 6739416 | Enhanced offset stabilization for eccentric reamers | W. Gregory Presley, Christopher S. Charles, D. Jay Clinkscales, Jeffrey B. Lund, Matthew J. Meiners +2 more | 2004-05-25 |
| 6695080 | Reaming apparatus and method with enhanced structural protection | W. Gregory Presley, Christopher S. Charles, Matthew J. Meiners, Mark E. Morris, D. Jay Clinkscales +3 more | 2004-02-24 |
| 6450271 | Surface modifications for rotary drill bits | Gordon A. Tibbitts, Danny E. Scott, James L. Overstreet, Terry J. Kolterman, Chih Lin +1 more | 2002-09-17 |
| 6283228 | Method for preserving core sample integrity | Pierre E. Collee, William A. Mallow, Dorothy P. Enright | 2001-09-04 |
| 6227319 | Superabrasive cutting elements and drill bit so equipped | — | 2001-05-08 |
| 5360074 | Method and composition for preserving core sample integrity using an encapsulating material | Pierre E. Collee, William A. Mallow | 1994-11-01 |
| 5253720 | Method and apparatus for taking an undisturbed core sample | Haraldur Karlsson, James T. Aumann | 1993-10-19 |
| 5230390 | Self-contained closure mechanism for a core barrel inner tube assembly | Jiri Zastresek | 1993-07-27 |
| 5163522 | Angled sidewall coring assembly and method of operation | Nick G. Eaton | 1992-11-17 |
| 5146999 | Shoe assembly with catcher for coring | Helma S. Wiser | 1992-09-15 |
| 5107942 | Inner tube stabilizer for a corebarrel | — | 1992-04-28 |
| 4878548 | Nozzle retention system for a drill bit | Alfred Ostertag, Robert Iversen, Craig R. Hyland, Kenneth D. Enever | 1989-11-07 |