| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Finland | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Netherlands | 2 | |
| #5 | Norway | 2 | |
| #6 | Sweden | 2 | |
| #7 | United States | 2 | |
| #8 | Canada | 1 | |
| #9 | Denmark | 1 | |
| #10 | Spain | 1 | |
| #11 | France | 1 | |
| #12 | Italy | 1 | |
| #13 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separating solids using liquids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Apeland Ivar | 16 |
| Publication | Filing date | Title |
|---|---|---|
| FI850779A0 | Sandklassifiseringstank | |
| GB8403851D0 | A method for classifying sand |