Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5472633 | Process for the preparation of a stable salt-free iron chelate for use in hydrogen sulfide abatement | Freddie Griffin, Jr., David A. Wilson | 1995-12-05 |
| 5447603 | Process for removing metal ions from liquids | Robert J. Michalowski, R. Keith Frank, Teresa Littleton, Jaime Simon, Walter L. Vaughn +1 more | 1995-09-05 |
| 5342593 | Process for absorption of sulfur compounds from fluids | Dane Chang, David A. Wilson | 1994-08-30 |
| 5236678 | Process for absorption of sulfur compounds from fluids using piperidines | Dane Chang | 1993-08-17 |
| 5223181 | Process for selectively concentrating the radioactivity of thorium containing magnesium slag | David A. Wilson, Jaime Simon, Dana W. Morin | 1993-06-29 |
| 5145558 | Composition for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive | Teresa Littleton, Robert T. Patton | 1992-09-08 |
| 5108723 | Process for absorption of sulfur compounds from fluids | Dane Chang, David A. Wilson | 1992-04-28 |
| 5098681 | Process for absorption of sulfur compounds from fluids | Dane Chang, Druce K. Crump | 1992-03-24 |
| 5013404 | Process for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive | Teresa Littleton, Robert T. Patton | 1991-05-07 |
| 4980471 | Preparation of piperazinones for use as sulfur dioxide absorbents | David A. Wilson, Dane Chang | 1990-12-25 |
| 4732650 | Bleaching of cellulosic pulps using hydrogen peroxide | Robert J. Michalowski, Jimmy D. Myers, David A. Wilson | 1988-03-22 |
| 4614646 | Stabilization of peroxide systems in the presence of alkaline earth metal ions | — | 1986-09-30 |