| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 3 | |
| #5 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Forrest John | 12 |
| #2 | Stewart William | 11 |
| #3 | Tulloch Rory | 9 |
| #4 | Catherall Roger | 3 |
| #5 | Pounds Randall Jay | 2 |
| #6 | Pounds Randall J | 1 |
| #7 | Stewart William M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO8706300A1 | Improvements in drilling using downhole drilling tools | |
| GB8530078D0 | Drill string stabiliser | |
| GB8529651D0 | Directional drilling | |
| GB8518218D0 | Drop ball sub-assembly |