| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 15 | |
| #2 | Austria | 3 | |
| #3 | Switzerland | 2 | |
| #4 | Germany | 2 | |
| #5 | Australia | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Special wind, spring and weight motors | |
| #3 | Rotary-pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ask Emil Julius | 22 |
| #2 | Emil Julius Ask | 2 |
| #3 | Julius Ask Emil | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0032885A1 | Regenerative pump with tangential outlet | |
| DE2634214A1 | CENTRIFUGAL PUMP | |
| AU1260370A | Improvements relating to rotary pumps |