| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 5 | |
| #2 | Austria | 2 | |
| #3 | Finland | 2 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | Denmark | 1 | |
| #8 | France | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Italy | 1 | |
| #11 | Norway | 1 | |
| #12 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #13 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Cyclones | |
| #2 | Separation | |
| #3 | Paper-making machines | |
| #4 | Treatment of paper-making materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Skardal Karl Arvid | 4 |
| #2 | Janson Bengt Gotthard | 2 |
| #3 | Janson B G | 2 |
| #4 | Skardal K | 2 |
| #5 | Janson B | 1 |
| #6 | Janson Bengt Gotthard Ing | 1 |
| #7 | Skardal K A | 1 |
| #8 | Skardal Karl A | 1 |
| #9 | Di Meo R | 1 |
| #10 | Yanson Bengt Gottkhard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA990685A | Parallel connection of vortex separators with common input and output chambers | |
| SU884553A3 | Method of detecting suspended particles in liquid |