| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Brazil | 1 | |
| #3 | Canada | 1 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | France | 1 | |
| #7 | Morocco | 1 | |
| #8 | Tunisia | 1 | |
| #9 | Turkey | 1 | |
| #10 | United States | 1 | |
| #11 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ledeuil Didier | 7 |
| #2 | Didier Ledeuil | 2 |
| Publication | Filing date | Title |
|---|---|---|
| FR2599400A1 | Process for making waterproof a hydraulic structure in compacted concrete or embankment |