Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972164 | Persulfate mixtures for repulping wet strength paper | Dean S. Thorp, Robert H. Tieckelmann | 1999-10-26 |
| 5718837 | Persulfate mixtures for repulping wet strength paper | Dean S. Thorp, Robert H. Tieckelmann | 1998-02-17 |
| 5501802 | Method for treating water using an organic sanitizer and a persulfate | Dean S. Thorp, Robert H. Tieckelmann, Donald Lapham | 1996-03-26 |
| 5030359 | Dewatering sludge | Harry M. Castrantas | 1991-07-09 |
| 4935391 | Process for preparing a purified mineral coating | Harry M. Castrantas, J. Miller Byne | 1990-06-19 |
| 4453597 | Stimulation of hydrocarbon flow from a geological formation | Richard A. Brown, Charles J. Lymburner, Robert D. Norris | 1984-06-12 |