Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244155 | Solid-solid separations utilizing alkanol amines | Richard R. Klimpel, Basil S. Fee | 1993-09-14 |
| 5173176 | Dialkylated aryl monosulfonate collectors useful in the flotation of minerals | Richard R. Klimpel, Kevin A. Frazier | 1992-12-22 |
| 5171427 | Sulfonated and carboxylate collector compositions useful in the flotation of minerals | Richard R. Klimpel, Gordon D. McCann | 1992-12-15 |
| 5131600 | Alkanol amine grinding aids | Richard R. Klimpel, Basil S. Fee | 1992-07-21 |
| 5057209 | Depression of the flotation of silica or siliceous gangue in mineral flotation | Richard R. Klimpel, Robert D. Hansen, Basil S. Fee | 1991-10-15 |
| 5015367 | Alkylated diaryl oxide monosulfonate collectors useful in the floatation of minerals | Richard R. Klimpel | 1991-05-14 |