Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879022 | Ore flotation process and use of mixed hydrocarbyl dithiophosphoric acids and salts thereof | Alan C. Clark, Edward P. Richards | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879022 | Ore flotation process and use of mixed hydrocarbyl dithiophosphoric acids and salts thereof | Alan C. Clark, Edward P. Richards | 1989-11-07 |