Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8999114 | BCTMP filtrate recycling system and method | — | 2015-04-07 |
| 8753477 | BCTMP filtrate recycling system and method | — | 2014-06-17 |
| 7976676 | Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base | Kent Witherspoon | 2011-07-12 |
| 7976677 | Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base | Kent Witherspoon | 2011-07-12 |
| 6569284 | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage | Jasper H. Field | 2003-05-27 |
| 5792361 | Method for treatment of an aqueous waste material | Jianhua Wang | 1998-08-11 |
| 5670020 | Foam separation method for reducing AOX, COD, and color bodies of kraft pulp bleach plant effluents | Christopher P. Hung | 1997-09-23 |
| 5626717 | Oxidative treatment of bleach plant effluent | Christopher P. Hung, Hugh P. Gallagher, Jasper H. Field | 1997-05-06 |