Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Norman O. Clark | English Clays Lovering Pochin & | 3 |
| 2 | Brian Waters | English Clays Lovering Pochin & | 2 |
| 3 | Pamela G. Drage | Ecc International Limited | 1 |
| 3 | Beaumont B. Varcoe | English Clays Lovering Pochin & | 1 |
| 3 | Gordon S. Keat | English Clays Lovering Pochin & | 1 |
| 3 | John P. Beaven | English Clays Lovering Pochin & | 1 |