Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7845436 | Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element | Craig H. Cooley, Timothy N. Sexton, S. Barrett Peterson, Christopher F. Johnson | 2010-12-07 |
| 7631560 | Methods of inspecting rotary drill bits | Nicholas J. Lyons, Eric C. Sullivan, Terry D. Watts | 2009-12-15 |
| 7621351 | Reaming tool suitable for running on casing or liner | Lester I. Clark, John C. Thomas, Eric E. McClain | 2009-11-24 |
| 7497280 | Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same | Van Jordan Brackin, Danny E. Scott, Marcus Skeem, Matthew R. Isbell | 2009-03-03 |
| 7243745 | Cutting elements and rotary drill bits including same | Marcus Skeem, Danny E. Scott | 2007-07-17 |
| 7188692 | Superabrasive cutting elements having enhanced durability, method of producing same, and drill bits so equipped | Danny E. Scott, Marcus Skeem | 2007-03-13 |
| 7178609 | Window mill and drill bit | Daniel R. Hart, Calvin J. Stowe, II, Trung Huynh, Roy Swanson, Rustom K. Mody +3 more | 2007-02-20 |
| 6935444 | Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped | Danny E. Scott, Marcus Skeem | 2005-08-30 |
| 6739416 | Enhanced offset stabilization for eccentric reamers | W. Gregory Presley, Christopher S. Charles, D. Jay Clinkscales, Matthew J. Meiners, Steven R. Radford +2 more | 2004-05-25 |
| 6711969 | Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles | Matthew J. Meiners, Thomas M. Harris | 2004-03-30 |
| 6695080 | Reaming apparatus and method with enhanced structural protection | W. Gregory Presley, Christopher S. Charles, Steven R. Radford, Matthew J. Meiners, Mark E. Morris +3 more | 2004-02-24 |
| 6536543 | Rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles | Matthew J. Meiners, Thomas M. Harris | 2003-03-25 |
| 6145608 | Superhard cutting structure having reduced surface roughness and bit for subterranean drilling so equipped | Redd H. Smith, Trent N. Butcher | 2000-11-14 |
| 6112836 | Rotary drill bits employing tandem gage pad arrangement | John R. Spaar, James A. Norris, Christopher C. Beuershausen, Rudolf Carl Pessier, Michael P. Ohanian +2 more | 2000-09-05 |
| 5967250 | Modified superhard cutting element having reduced surface roughness and method of modifying | Redd H. Smith, Trent N. Butcher | 1999-10-19 |
| 5653300 | Modified superhard cutting elements having reduced surface roughness method of modifying, drill bits equipped with such cutting elements, and methods of drilling therewith | Redd H. Smith | 1997-08-05 |
| 5447208 | Superhard cutting element having reduced surface roughness and method of modifying | Redd H. Smith | 1995-09-05 |
| 5437343 | Diamond cutters having modified cutting edge geometry and drill bit mounting arrangement therefor | Craig H. Cooley, Redd H. Smith | 1995-08-01 |
| 4919013 | Preformed elements for a rotary drill bit | Redd H. Smith | 1990-04-24 |