| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | France | 2 | |
| #3 | South Africa | 2 | |
| #4 | Argentina | 1 | |
| #5 | Brazil | 1 | |
| #6 | Canada | 1 | |
| #7 | China | 1 | |
| #8 | Czechia | 1 | |
| #9 | Egypt | 1 | |
| #10 | EPO (European Patent Office) | 1 | |
| #11 | Poland | 1 | |
| #12 | Romania | 1 | |
| #13 | Turkey | 1 | |
| #14 | United States | 1 | |
| #15 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Machine tools | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Metal tempering | |
| #2 | Climate change mitigation in goods production | |
| #3 | Rolling metal | |
| #4 | Machines for making railways |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perrin Jean Luc | 10 |
| #2 | Perrin Jean-Luc | 5 |
| #3 | Luc Jean | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2769928A1 | Reinforced mushroom rail | |
| FR2738843A1 | Method for heat treating a steel rail |