| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | Brazil | 2 | |
| #4 | Canada | 2 | |
| #5 | China | 2 | |
| #6 | EPO (European Patent Office) | 2 | |
| #7 | Mexico | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Spring or inertia motors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vorhoff Werner | 11 |
| #2 | Werner Vorhoff | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2019048702A1 | Directional drilling device and method for calibrating same | |
| AU2017217560A1 | Drilling tool for sinking automatically directionally monitored bores |