| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 2 | |
| #2 | Australia | 1 | |
| #3 | Belgium | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Israel | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Netherlands | 1 | |
| #9 | United States | 1 | |
| #10 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Earth drilling | |
| #3 | Dredging | |
| #4 | Sewers | |
| #5 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cortvrindt Guy Adolf August | 9 |
| #2 | Van Impe William Frans | 6 |
| #3 | Impe William Frans Van | 2 |
| #4 | Guy Adolf August Cortvrindt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL1032582C1 | Laying pipes underground below water table, involves excavating trench in between dams formed in situ by mixing soil with sealing material | |
| EP0989241A1 | Method for forming concrete piles in the ground | |
| BE1007558A5 | Ground displacement chuck for forming of posts in the ground. |