| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 17 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Chemical engineering | |
| #3 | Environmental technology | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Steam turbines | |
| #2 | Shafts | |
| #3 | Separation | |
| #4 | Gas-turbine plants | |
| #5 | Steam engine plants | |
| #6 | Nuclear power plants | |
| #7 | Reduction of greenhouse gas emissions | |
| #8 | Combustion residues removal | |
| #9 | Separating solids | |
| #10 | Water treatment |