Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037451 | Manufacture of abrasive products | Richard P. Burnand, Raymond Albert Chapman, Trevor J. Martell | 1991-08-06 |
| 5030250 | Manufacture of abrasive products | Richard P. Burnand, Raymond Albert Chapman, Trevor J. Martell | 1991-07-09 |
| 4944913 | Abrasive and wear resistant material | Henry B. Dyer, John Dodsworth | 1990-07-31 |