| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 13 | |
| #2 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Foods and drinks | |
| #3 | Chemical engineering | |
| #4 | Transport | |
| #5 | Engines, pumps and turbines | |
| #6 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering | |
| #2 | Separation | |
| #3 | Beer | |
| #4 | Vehicle wheels | |
| #5 | Preheating for stem generation | |
| #6 | Wheelchairs and sledges | |
| #7 | Pasteurisation | |
| #8 | Controlling combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dufour Henri | 13 |
| #2 | Ravenez Louis | 2 |
| #3 | Henri Dufour | 2 |