| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 3 | |
| #2 | Brazil | 2 | |
| #3 | Canada | 2 | |
| #4 | Germany | 2 | |
| #5 | France | 2 | |
| #6 | Japan | 2 | |
| #7 | United States | 2 | |
| #8 | Finland | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Fibrous raw materials | |
| #2 | Treatment of paper-making materials | |
| #3 | Paper recycling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ahrel B | 6 |
| #2 | Ahrel Bo | 6 |
| #3 | Poo Aareru | 1 |
| #4 | Ahrel Bo A | 1 |
| #5 | Boo Aareru | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4187141A | Method of producing bleached mechanical pulp | |
| GB1546684A | Grinding apparatus | |
| DE2606718A1 | METHOD OF MANUFACTURING MECHANICAL PAPER PAPER |