Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9034146 | Copolymer blend compositions for use to increase paper filler content | Joseph M. Mahoney | 2015-05-19 |
| 9011643 | Cellulase composition containing cellulase and papermaking polymers for paper dry strength application | Qu-Ming Gu | 2015-04-21 |
| 8932433 | Retention and drainage in the manufacture of paper | John C. Harrington, Robert A. Gelman | 2015-01-13 |
| 8518216 | Copolymer blend compositions for use to increase paper filler content | Joseph M. Mahoney | 2013-08-27 |
| 8444818 | Stable and aqueous compositions of polyvinylamines with cationic starch, and utility for papermaking | Christopher P. Dilkus, Qu-Ming Gu | 2013-05-21 |
| 8308902 | Retention and drainage in the manufacture of paper | John C. Harrington, Robert A. Gelman | 2012-11-13 |
| 8163134 | Copolymer blend compositions for use to increase paper filler content | Joseph M. Mahoney, Robert A. Gill, Daniel Bruce Evans | 2012-04-24 |
| 7396874 | Cationic or amphoteric copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions | Martha Hollomon, Brian Walchuk | 2008-07-08 |
| 6168686 | Papermaking aid | Richard A. Hobirk | 2001-01-02 |
| 5885413 | Deinking wastepaper containing electrostatic printed ink using branched alcohol alkoxylate surfactant | Sandra K. Richmann | 1999-03-23 |
| 5800719 | Method for dewatering drinking sludge using a water soluble block copolymer | Richard A. Hobirk | 1998-09-01 |
| 5660683 | Process for deinking waste paper using a mixture of thiol ethoxylate and alcohol alkoxylates | — | 1997-08-26 |
| 5626718 | Use of polymers in the recycled fiber washing/deinking process | Irenee J. Philippe, Thomas Taggart, Mary Beth Letscher, Michael Schuster, John C. Harrington | 1997-05-06 |