| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | Canada | 1 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Charlton Stephen | 7 |
| #2 | Thornton Thomas John Oliver | 5 |
| #3 | Thornton John Thomas Oliver | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB0016145D0 | Improvements in or relating to downhole tools | |
| GB0016146D0 | Improvements in or relating to downhole tools | |
| GB9724194D0 | Improvements in or relating to downhole tools |