| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | Switzerland | 4 | |
| #3 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Civil engineering | |
| #4 | Measurement | |
| #5 | Control | |
| #6 | Packaging and shipping |
| # | Name | Total Patents |
|---|---|---|
| #1 | Le Quinquis Jean-Pierre | 1 |
| #2 | Sadoulet Maurice | 1 |
| #3 | Joseph Regent Jean | 1 |
| #4 | Maurice Sadoulet | 1 |
| #5 | Jean Joseph Regent | 1 |
| #6 | Philippe Regent | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CH506319A | Turbine for sewage aeration for microbiology- - purification | |
| DE1916044A1 | Device for purifying waste water | |
| DE1813992A1 | Self-regulating device for treating water by means of a drip |