Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11926966 | Method of increasing efficiency of chemical additives in a papermaking system | Davit E. Sharoyan, Valmir Frauches de Freitas, Flávio Henrique Gazzotti Bueno de Oliveira | 2024-03-12 |
| 10876254 | Chemical efficiency increase in papermaking process | Mingxiang Luo, Davit E. Sharoyan, Sujan Singh | 2020-12-29 |
| 9873982 | Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom | Kate Marritt Lusvardi, Fushan Zhang | 2018-01-23 |
| 8932433 | Retention and drainage in the manufacture of paper | Frank J. Sutman, Robert A. Gelman | 2015-01-13 |
| 8308902 | Retention and drainage in the manufacture of paper | Frank J. Sutman, Robert A. Gelman | 2012-11-13 |
| 7615135 | Retention and drainage aids | Martha Hollomon | 2009-11-10 |
| 7507781 | Anionic copolymers prepared in an inverse emulsion matrix | Brian Walchuk, Fushan Zhang, William S. Carey, Richard L. Brady | 2009-03-24 |
| 7429625 | Inversion of inverse emulsion polymers | Robert A. Gelman, K. Abraham Vaynberg | 2008-09-30 |
| 7250448 | Anionic copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions | Brian Walchuk, Fushan Zhang, William S. Carey, Richard L. Brady | 2007-07-31 |
| 5626718 | Use of polymers in the recycled fiber washing/deinking process | Irenee J. Philippe, Frank J. Sutman, Thomas Taggart, Mary Beth Letscher, Michael Schuster | 1997-05-06 |
| 5532308 | Method for improving retention and drainage characteristics in alkaline papermaking | Michael Schuster, Wen P. Liao, Fu Chen | 1996-07-02 |
| 5482595 | Method for improving retention and drainage characteristics in alkaline papermaking | Michael Schuster | 1996-01-09 |
| 5415740 | Method for improving retention and drainage characteristics in alkaline papermaking | Michael Schuster, Wen P. Liao, Fu Chen | 1995-05-16 |
| 5387318 | Water soluble graft copolymers for laser print deinking loop clarification | Wen P. Liao, Walter Burgess, Fu Chen | 1995-02-07 |
| 5269942 | Quaternized polyvinylamines for deinking loop clarification | Jen-Chi Chen, Fu Chen | 1993-12-14 |
| D256963 | Clip on pen and pencil holder | — | 1980-09-23 |