Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709551 | High molecular weight cationic and anionic polymers comprising zwitterionic monomers | Martin J. Coffey, Steven T. Govoni, Ross T. Gray, Patrick G. Murray | 2004-03-23 |
| 6200420 | Method of using an anionic composite to increase retention and drainage in papermaking | Bruce A. Keiser | 2001-03-13 |
| 6083997 | Preparation of anionic nanocomposites and their use as retention and drainage aids in papermaking | Bruce A. Keiser | 2000-07-04 |
| 5595629 | Papermaking process | — | 1997-01-21 |
| 5185062 | Papermaking process with improved retention and drainage | — | 1993-02-09 |
| 5098520 | Papermaking process with improved retention and drainage | — | 1992-03-24 |
| 4191645 | Process for dewatering sewage sludge | Ernest D. Kaufman | 1980-03-04 |