Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5447603 | Process for removing metal ions from liquids | Robert J. Michalowski, Steven H. Christiansen, R. Keith Frank, Jaime Simon, Walter L. Vaughn +1 more | 1995-09-05 |
| 5145558 | Composition for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive | Steven H. Christiansen, Robert T. Patton | 1992-09-08 |
| 5013404 | Process for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive | Steven H. Christiansen, Robert T. Patton | 1991-05-07 |