| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Greece | 2 | |
| #4 | Italy | 2 | |
| #5 | Sweden | 2 | |
| #6 | Finland | 1 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Separation | |
| #3 | Climate change mitigation in wastewater treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hallen L | 5 |
| #2 | Hallen Lars | 3 |
| #3 | Hallen Lars Ake | 1 |
| #4 | Hallen Lars-Ake | 1 |
| #5 | Lars Ake Hallen | 1 |
| #6 | Hallen L-A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FI803798L | Anordning vid kammarfilterpress | |
| EP0051582A1 | Method and device for biological processing of waste water | |
| WO8102730A1 | Rotating biological confactor | |
| WO8102570A1 | Rotating biological contactor material | |
| IT7947925D0 | Microbe culture appts. for biological purificn. of waste water - comprises rotary spiral strip with stamped surface and smooth retainer band |