| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 2 | |
| #2 | African Regional Industrial Property Organization | 1 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Chile | 1 | |
| #7 | China | 1 | |
| #8 | Mexico | 1 | |
| #9 | Peru | 1 | |
| #10 | Sweden | 1 | |
| #11 | United States | 1 | |
| #12 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eriksson Leif | 11 |
| #2 | Krekula Håkan | 7 |
| #3 | Krekula Hakan | 3 |
| #4 | Leif Eriksson | 2 |
| #5 | Håkan Krekula | 2 |
| #6 | Krekula Häkan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN106715831A | Rock bolt to be embedded in a fixing material, in a bore hole | |
| EP2726712A1 | Expandable mine bolt |