Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7615135 | Retention and drainage aids | John C. Harrington | 2009-11-10 |
| 7396874 | Cationic or amphoteric copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions | Brian Walchuk, Frank J. Sutman | 2008-07-08 |