| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Israel | 2 | |
| #5 | United States | 2 | |
| #6 | Germany | 1 | |
| #7 | India | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chapman Walter H | 5 |
| #2 | Eichelmann John F Jr | 3 |
| #3 | Eichelmann Jr John F | 1 |
| #4 | Eichelmann Jun John F | 1 |
| #5 | Chapman W | 1 |
| #6 | Eichelmann J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA996883A | Air and water pollution control | |
| GB1401384A | Air and water pollution control | |
| DE2315768A1 | Total environmental pollution prevention system - scrubbing waste gases by water and evaporating wash water | |
| IL41910D0 | Air and water pollution control | |
| US3890207A | Air and water pollution control | |
| IL36406D0 | A process for water treatment | |
| CA944875A | Multiple re-use of water | |
| US3592743A | Multiple re-use of water |