Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6723245 | Method of using water soluble cationic polymers in membrane biological reactors | John H. Collins | 2004-04-20 |
| 6702921 | Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent | Prasad Y. Duggirala, Sergey M. Shevchenko | 2004-03-09 |