| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | Sweden | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 2 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | United States | 2 | |
| #7 | Brazil | 1 | |
| #8 | China | 1 | |
| #9 | EAPO (Eurasian Patent Organization) | 1 | |
| #10 | Mexico | 1 | |
| #11 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Geophysics | |
| #2 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hjorth Jan | 16 |
| #2 | Litzen Bjoern | 6 |
| #3 | Jan Hjorth | 2 |
| #4 | Litzen Bjorn | 2 |
| #5 | Hulden Jarl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA2639036A1 | A method for monitoring a subterranean fracture | |
| BRPI0607277A2 | method and system for determining the position of a drill bit | |
| AU4499301A | Method for estimating the position of a drill |