Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5458786 | Method for dewatering fine coal | Gerald H. Luttrell | 1995-10-17 |
| 5397001 | Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles | Gregory T. Adel, Gerald H. Luttrell | 1995-03-14 |
| 5396260 | Video instrumentation for the analysis of mineral content in ores and coal | Gregory T. Adel, Gerald H. Luttrell | 1995-03-07 |
| 5167798 | Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles | Gregory T. Adel, Gerald H. Luttrell | 1992-12-01 |
| 5161694 | Method for separating fine particles by selective hydrophobic coagulation | Gerald H. Luttrell | 1992-11-10 |
| 4981582 | Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles | Gregory T. Adel, Gerald H. Luttrell | 1991-01-01 |
| 4655896 | Apparatus for ferric ion treatment for removal of ash-forming mineral matter from coal | A. Dilo Paul | 1987-04-07 |
| 4629556 | Purification of kaolin clay by froth flotation using hydroxamate collectors | Thomas M. Hilderbrand | 1986-12-16 |