Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8980051 | Sulfonation of pulp produced by alkali pulping process | — | 2015-03-17 |
| 8262850 | Chemical activation and refining of southern pine kraft fibers | Zheng Tan, Karen L. Maurer | 2012-09-11 |
| 7967948 | Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents | — | 2011-06-28 |
| 7638016 | Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness | — | 2009-12-29 |
| 7497924 | Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board | Zheng Tan | 2009-03-03 |
| 7037405 | Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board | Zheng Tan | 2006-05-02 |
| 7005514 | Process for preparing microcrystalline cellulose | — | 2006-02-28 |
| 4439272 | Pulp mill residual liquor recovery process | — | 1984-03-27 |