Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5716711 | Method for mine support and composition | Peter N. Calder, Frank Maine | 1998-02-10 |
| 4554066 | Density classification of particulate materials by elutriation methods and apparatus | David M. Turbitt | 1985-11-19 |