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| US7841426 | 5 Abr 2007 | 30 Nov 2010 | Baker Hughes Incorporated | Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit |
| US7845435 | 2 Abr 2008 | 7 Dic 2010 | Baker Hughes Incorporated | Hybrid drill bit and method of drilling |
| US8047307 | 19 Dic 2008 | 1 Nov 2011 | Baker Hughes Incorporated | Hybrid drill bit with secondary backup cutters positioned with high side rake angles |
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| US8141664 | 3 Mar 2009 | 27 Mar 2012 | Baker Hughes Incorporated | Hybrid drill bit with high bearing pin angles |
| US8157026 | 18 Jun 2009 | 17 Abr 2012 | Baker Hughes Incorporated | Hybrid bit with variable exposure |
| US8191635 | 6 Oct 2009 | 5 Jun 2012 | Baker Hughes Incorporated | Hole opener with hybrid reaming section |
