| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Canada | 2 | |
| #3 | United States | 2 | |
| #4 | Belgium | 1 | |
| #5 | Spain | 1 | |
| #6 | Italy | 1 | |
| #7 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Audio-visual technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Flotation | |
| #3 | Special information storage | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lewandowski Raymond | 7 |
| #2 | Lewandowski R | 1 |
| #3 | Laurent S O R | 1 |
| #4 | Lewandowski Epouse | 1 |
| #5 | Fery Patric | 1 |
| #6 | Lewandowski Sylvette O R Nee L | 1 |
| #7 | Lewandowski Sylvette Odette Ro | 1 |
| #8 | Rouet Jacques | 1 |
| #9 | Jacques Rouet | 1 |
| #10 | Raymond Lewandowski | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3922224A | Apparatus for treating waste waters | |
| CA1015474A | Process and apparatus for treating waste water | |
| US3883426A | Process for treating waste water | |
| ES413181A1 | Method and apparatus for the treatment of effluents containing in particular heavy metals |