| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Civil engineering | |
| #3 | Machines | |
| #4 | Transport | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Sewers | |
| #2 | Climate change mitigation in wastewater treatment | |
| #3 | Unspecified technologies | |
| #4 | Water treatment | |
| #5 | Vehicle parts | |
| #6 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hellers Bo Goeran | 4 |
| #2 | Hellers B G | 3 |
| #3 | Nilsson Robert | 3 |
| #4 | Bo Gooran Hererusu | 2 |
| #5 | Hellers Bo G | 2 |
| #6 | Roberuto Niruson | 1 |
| #7 | Hellers Bo Goran | 1 |
| #8 | Nilsson R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4488963A | Sewage system for waste water | |
| US4296772A | Non-return valve | |
| US4199828A | Vacuum toilet apparatus for mobile units |