Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8267685 | Method of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak, James R. Tutt | 2012-09-18 |
| 6672865 | Method of mixing high temperature gases in mineral processing kilns | Eric R. Hansen, Ralph A. Supelak, James R. Tutt | 2004-01-06 |
| 5341962 | Swing arm feeder | William L. PETITJEAN | 1994-08-30 |
| 4764256 | Removal of polychlorinated biphenyls by solvent extraction | — | 1988-08-16 |
| 4740732 | Adaptive rewind for tape drive | — | 1988-04-26 |
| 4391617 | Process for the recovery of vaporized sublimates from gas streams | — | 1983-07-05 |
| 4252772 | Apparatus for the recovery of vaporized phthalic anhydride from gas streams | — | 1981-02-24 |