Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Sigrid Vorwerk | Keraplast Technologies | 2 |
| 2 | Bevan J Collins | — | 1 |
| 2 | Frederick Edward Osler-Weppenaar | — | 1 |
| 2 | Raymond G. Whimp | — | 1 |
5 patents · 4 inventors
Ranked #68,584 of 111,555 cities Top 65%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Sigrid Vorwerk | Keraplast Technologies | 2 |
| 2 | Bevan J Collins | — | 1 |
| 2 | Frederick Edward Osler-Weppenaar | — | 1 |
| 2 | Raymond G. Whimp | — | 1 |