| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 22 | |
| #2 | Belgium | 2 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Civil engineering | |
| #3 | Environmental technology | |
| #4 | Machines | |
| #5 | Foods and drinks | |
| #6 | Materials and metallurgy | |
| #7 | Engines, pumps and turbines | |
| #8 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Breuil Emmanuel | 2 |
| #2 | Pain Fred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB627702A | Improvements relating to ion-exchange processes |