Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11447207 | Boat hull drain plug | Eduardo Valverde, Scott Wood | 2022-09-20 |
| 10836455 | Boat hull drain plug | Eduardo Valverde, Scott Wood | 2020-11-17 |
| 10107041 | Drill bit having shear cutters and gouging cutters | John James Herman, Dallas Wilkins, Ryan J. C. Marley | 2018-10-23 |
| 9951563 | Wellbore mill having shear cutters and gouging cutters | Ryan J. C. Marley, Alex Wong, John James Herman, Carl M. Hoffmaster, Kenneth M. Nevlud | 2018-04-24 |
| 7703550 | Down hole motor with locking mechanism | Kenneth M. Nevlud | 2010-04-27 |
| 7493971 | Concentric expandable reamer and method | Kenneth M. Nevlud | 2009-02-24 |
| 7469757 | Drill bit with diamond impregnated cutter element | Michael G. Azar | 2008-12-30 |
| 7451836 | Advanced expandable reaming tool | Carl M. Hoffmaster, David Truax | 2008-11-18 |
| 7451837 | Advanced expandable reaming tool | Carl M. Hoffmaster, David Truax | 2008-11-18 |
| 7448455 | Turbodrill with asymmetric stator and rotor vanes | Mark Natanael, Kenneth M. Nevlud, James Edmond Beylotte | 2008-11-11 |
| 7293617 | Polycrystaline diamond compact insert reaming tool | — | 2007-11-13 |
| 7137463 | Polycrystaline diamond compact insert reaming tool | — | 2006-11-21 |
| 7111694 | Fixed blade fixed cutter hole opener | — | 2006-09-26 |
| 6883622 | Method for drilling a wellbore using a bi-center drill bit | Thomas L. Young, David Truax | 2005-04-26 |
| 6880650 | Advanced expandable reaming tool | Carl M. Hoffmaster, David Truax | 2005-04-19 |
| 6742607 | Fixed blade fixed cutter hole opener | — | 2004-06-01 |
| 6659207 | Bi-centered drill bit having enhanced casing drill-out capability and improved directional stability | Carl M. Hoffmaster | 2003-12-09 |
| 6609580 | Polycrystalline diamond compact insert reaming tool | — | 2003-08-26 |
| 6474425 | Asymmetric diamond impregnated drill bit | David Truax | 2002-11-05 |
| 6464024 | Bi-centered drill bit having improved drilling stability, mud hydraulics and resistance to cutter damage | David Truax | 2002-10-15 |
| 6386302 | Polycrystaline diamond compact insert reaming tool | — | 2002-05-14 |
| 6269893 | Bi-centered drill bit having improved drilling stability mud hydraulics and resistance to cutter damage | David Truax | 2001-08-07 |
| 6039131 | Directional drift and drill PDC drill bit | — | 2000-03-21 |
| 6009962 | Impregnated type rotary drill bits | — | 2000-01-04 |
| 5816346 | Rotary drill bits and methods of designing such drill bits | — | 1998-10-06 |