| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Australia | 1 | |
| #6 | Brazil | 1 | |
| #7 | Germany | 1 | |
| #8 | Norway | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ollerenshaw Andrew | 16 |
| #2 | Russell Mark Alexander | 11 |
| #3 | Russell Mark | 4 |
| #4 | Russel Mark | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0402220D0 | Adjustable downhole tool | |
| GB0028243D0 | A down-hole tool |