| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 13 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Norway | 4 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | United States | 2 | |
| #6 | Australia | 1 | |
| #7 | Denmark | 1 | |
| #8 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Venting or aerating devices | |
| #3 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stewart Arthur | 11 |
| #2 | Stewart Arthur Deacey | 8 |
| #3 | Craig Mark William | 7 |
| #4 | Schmidt Karl | 5 |
| #5 | Stewart Arthur Doacey | 2 |
| #6 | Stewart Grant | 1 |
| #7 | Stewart Craig | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0902253D0 | Downhole tool | |
| GB0620922D0 | Wear resistant downhole tool | |
| US2006201670A1 | Downhole apparatus | |
| US2006207796A1 | Multi-function downhole tool | |
| GB0605092D0 | Downhole apparatus | |
| GB0428395D0 | Drill pipe torque/vibration-reduction and/or protection apparatus | |
| GB0002916D0 | Drill pipe torque reduction and protection apparatus | |
| GB9920731D0 | Downhole diverter tools | |
| EP0774040A1 | Erosion resistant downhole mud diverter tool | |
| GB9101921D0 | Stabilising tool | |
| GB8600235D0 | Bent sub gauge | |
| GB8501256D0 | Stabilizing tool |