Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569284 | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage | Caifang Yin | 2003-05-27 |
| 5626717 | Oxidative treatment of bleach plant effluent | Caifang Yin, Christopher P. Hung, Hugh P. Gallagher | 1997-05-06 |
| 5328510 | Apparatus for making paper and paperboard having enhanced gloss | Leroy C. Hofmann, Robert W. Hicks | 1994-07-12 |
| 5143579 | Treatment of black liquor with a screw extruder evaporator | Vladimir B. Lesokhin | 1992-09-01 |
| 5064692 | Method for producing paper products having increased gloss in which surface characteristics of a release film are imparted to coated substrates | Leroy C. Hofmann, Robert W. Hicks, Stephen Monroe | 1991-11-12 |
| 4692212 | Kraft linerboard by densification and heat treatment | Roy S. Swenson, Donald M. MacDonald, Michael Ring | 1987-09-08 |
| 4343680 | Hydrophobic oleophilic wood pulp | Robert W. Hicks | 1982-08-10 |