Top Inventors at Rockwool/Grodan B.V. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Jacob Frank De Groot | 4 |
| 2 | Lars Hansen | 2 |
| 3 | Christiaan Blok | 1 |
| #4 | Paul Jacques Louis Hubert Bouwens | 1 |
| #5 | Albert Willem Knop | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Jacob Frank De Groot | 4 |
| 2 | Lars Hansen | 2 |
| 3 | Christiaan Blok | 1 |
| #4 | Paul Jacques Louis Hubert Bouwens | 1 |
| #5 | Albert Willem Knop | 1 |