| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 4 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 2 | |
| #5 | Brazil | 1 | |
| #6 | Germany | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Japan | 1 | |
| #9 | Netherlands | 1 | |
| #10 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Control | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Systems controlling non-electric variables | |
| #3 | Sewers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jonsson A F | 3 |
| #2 | Jonsson Arne F | 3 |
| #3 | Fredriksson Axel | 2 |
| #4 | Jonsson A | 2 |
| #5 | Arun Furederitsuku Yonson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2005100796A1 | Impeller | |
| US4212590A | Method and apparatus for the continuous regulation of rotary hydrodynamic pumps | |
| JPS52135401A | Method of running hydraulic rotary pumps and apparatus therefor | |
| GB1577622A | Hydrodynamic pump units | |
| GB1578718A | Method and a device for the continuous regulation of a rotary hydrodynamic pump |