Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037533 | Ore flotation process and use of phosphorus containing sulfo compounds | Carlos A. Piedrahita | 1991-08-06 |
| 4879022 | Ore flotation process and use of mixed hydrocarbyl dithiophosphoric acids and salts thereof | Alan C. Clark, Douglas R. Shaw | 1989-11-07 |