| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Brazil | 2 | |
| #3 | Denmark | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Netherlands | 2 | |
| #6 | Norway | 2 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vergouw Theodorus Christianus | 10 |
| #2 | Vergouw Theodorus C M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8800913A | Drilling and winning device for oil and / or gas. | |
| NL8800894A | Method for thermally insulating composite pipelines under water and so insulated pipeline. |