| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Drenth Christopher L | 12 |
| #2 | Ibrahim George | 7 |
| #3 | Iondov George | 5 |
| #4 | Lachance Anthony | 4 |
| #5 | Littlely Keith William | 1 |
| #6 | Zhang Hongyan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2014054093A1 | Latch body components having multiple functions, and drilling head assembly incorporating same | |
| US2013220615A1 | Internal tubing cutter | |
| US2012273233A1 | Drill string components resistant to jamming | |
| US2011083901A1 | Core drilling tools with external fluid pathways | |
| US2011079436A1 | Core drilling tools with retractably lockable driven latch mechanisms | |
| US2011100718A1 | Core lifter | |
| US2011079435A1 | Driven latch mechanism | |
| US2011079433A1 | Pump-in seal |