Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167375 | Apparatus for mineral matter separation | — | 1992-12-01 |
| 4968413 | Process for beneficiating oil shale using froth flotation | Charles A. Salotti | 1990-11-06 |
| 4964576 | Method and apparatus for mineral matter separation | — | 1990-10-23 |
| 4673133 | Process for beneficiating oil shale using froth flotation and selective flocculation | Frank F. Aplan, Charles Zebula | 1987-06-16 |
| 4667885 | Process for grinding organic-containing minerals | — | 1987-05-26 |