Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10378295 | Bypass flushing for gas extraction systems | Prashant Shekhar, Gillies Alexander MacDonald | 2019-08-13 |
| 9816335 | Bypass flushing for gas extraction systems | Prashant Shekhar, Gillies Alexander MacDonald | 2017-11-14 |
| 9494006 | Pressure pulse well tool | Brian Mohon | 2016-11-15 |
| 8820747 | Multiple sealing element assembly | Alberto Zubia, Trung Leduc, Huward Paul Fontenot, Jr. | 2014-09-02 |
| 8789602 | Ball drop module | William C. Gill, Michael J. Harris, Aju Abraham | 2014-07-29 |
| 8491013 | Cementing swivel and retainer arm assembly and method | Richard David Peer | 2013-07-23 |
| 8381816 | Flushing procedure for rotating control device | Trung Leduc, Huward Paul Fontenot, Jr., Alberto Zubia | 2013-02-26 |
| 8118104 | Downhole valve with pass through ID | Huward Paul Fontenot, Jr., Richard David Peer | 2012-02-21 |
| 8091628 | Apparatus and method for providing fluid and projectiles to downhole tubulars | Richard David Peer | 2012-01-10 |
| 8065935 | Method of manufacturing a rotary drill bit | William H. Sherwood, Jr., L. Richard Borremans, James L. Duggan | 2011-11-29 |
| 7520345 | Fixed cutter rotary drill bit including support elements affixed to the bit body at least partially defining cutter pocket recesses | William H. Sherwood, Jr., L. Richard Borremans, James L. Duggan | 2009-04-21 |
| 7216565 | Methods of manufacturing and repairing steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses | William H. Sherwood, Jr., L. Richard Borremans, James L. Duggan | 2007-05-15 |
| 7070011 | Steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses | William H. Sherwood, Jr., L. Richard Borremans, James L. Duggan | 2006-07-04 |
| 6651756 | Steel body drill bits with tailored hardfacing structural elements | James L. Overstreet, Anton F. Zahradnik, James L. Duggan, Russel S. Smith, Mark E. Morris | 2003-11-25 |
| 6321862 | Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability | Christopher C. Beuershausen, Danny E. Scott, Rudolf Carl Pessier, Roland Illerhaus, Mark W. Dykstra +3 more | 2001-11-27 |
| 6290007 | Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability | Christopher C. Beuershausen, Danny E. Scott, Rudolf Carl Pessier | 2001-09-18 |