| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Finland | 3 | |
| #2 | Canada | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | United States | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hulkkonen Teijo | 11 |
| #2 | Paasonen Hannu | 11 |
| Publication | Filing date | Title |
|---|---|---|
| EP2132398A1 | Drilling device for drilling and reaming of a hole | |
| FI20040586A0 | Drilling device for drilling a hole in the ground and rock or drilling a pre-drilled hole | |
| FI20022043A0 | Cutting device for an abrasive drill | |
| FI20022042A0 | Cutting device for drilling large holes |