Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7707009 | Drill bit performance analysis tool | — | 2010-04-27 |
| 7286959 | Drill bit performance analysis tool | — | 2007-10-23 |
| 6782959 | Cutter element with non-linear, expanded crest | James C. Minikus, Chris E. Cawthorne, Gary R. Portwood, Gary E. Garcia, David P. Moran +1 more | 2004-08-31 |
| 6561293 | Cutter element with non-linear, expanded crest | James C. Minikus, Chris E. Cawthorne, Gary R. Portwood, Gary E. Garcia, David P. Moran +1 more | 2003-05-13 |
| 6367568 | Steel tooth cutter element with expanded crest | Gary R. Portwood, Gary E. Garcia, David P. Moran, Quan Nguyen | 2002-04-09 |
| 6241034 | Cutter element with expanded crest geometry | Gary R. Portwood, Gary E. Garcia, David P. Moran | 2001-06-05 |
| 6161634 | Cutter element with non-rectilinear crest | James C. Minikus, Chris E. Cawthorne, Gary R. Portwood, Gary E. Garcia, David P. Moran | 2000-12-19 |
| 4428442 | Rock bit lubrication system | — | 1984-01-31 |