Top Inventors at Internationella Siporex Ab All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Rolf E. Goransson | 4 |
| 2 | Oystein Kalvenes | 3 |
| 3 | Gosta Harald Eriksson | 1 |
| #4 | Percy Svensson | 1 |
| #5 | Maho Nakatsumi | 1 |
| #6 | Takahisa Ikunaga | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Rolf E. Goransson | 4 |
| 2 | Oystein Kalvenes | 3 |
| 3 | Gosta Harald Eriksson | 1 |
| #4 | Percy Svensson | 1 |
| #5 | Maho Nakatsumi | 1 |
| #6 | Takahisa Ikunaga | 1 |