Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087081 | Process for producing high solids colloidal silica | Zhi Chen, Dennis L. MacDonald, Ronald S. Doles, Wen Bai, Raymond D. Miller, Jr. | 2018-10-02 |
| 9975781 | Silica sols, method and apparatus for producing the same and use thereof in papermaking | Wen Bai, Jian Xu, Jia-Wun WU, Zhi Chen, Jian Shen +1 more | 2018-05-22 |
| 8992688 | Lignin separation from lignocellulosic hydrolizates and acidified pulp mill liquors | Sergey M. Shevchenko, Olivier Clot | 2015-03-31 |
| 8491753 | Composition and method for improving retention and drainage in papermaking processes by activating microparticles with a promoter-flocculant system | Javier S. Cardoso | 2013-07-23 |
| 7494565 | Use of starch with synthetic metal silicates for improving a papermaking process | Laura M. Sherman, James Smith | 2009-02-24 |
| 7473334 | Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers | Alessandra Gerli, Xavier S. Cardoso, Angela P. Zagala, Przem Pruszynski, Cathy C. Doucette | 2009-01-06 |
| 6592718 | Method of improving retention and drainage in a papermaking process using a diallyl-N,N-disubstituted ammonium halide-acrylamide copolymer and a structurally modified cationic polymer | Ross T. Gray, Andrei Zelenev, Jiwei Chen | 2003-07-15 |
| 6432271 | Method of increasing retention and drainage in papermaking using high molecular weight water-soluble anionic or nonionic dispersion polymers | Chidambaram Maltesh, John R. Hurlock | 2002-08-13 |
| 6331229 | Method of increasing retention and drainage in papermaking using high molecular weight water-soluble anionic or monionic dispersion polymers | Chidambaram Maltesh, John R. Hurlock | 2001-12-18 |
| 6071379 | Papermaking process utilizing hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide as retention and drainage aids | John R. Hurlock, Chidambaram Maltesh, Ramasubramanyam Nagarajan | 2000-06-06 |
| 6059930 | Papermaking process utilizing hydrophilic dispersion polymers of dimethylaminoethyl acrylate methyl chloride quaternary and acrylamide as retention and drainage aids | John R. Hurlock | 2000-05-09 |
| 6019904 | Hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide for the clarification of deinking process waters | Karen R. Tubergen | 2000-02-01 |
| 6007679 | Papermaking process | R. Nagarajan | 1999-12-28 |
| 5891304 | Use of hydrophilic dispersion polymers for coated broke treatment | — | 1999-04-06 |
| 5750034 | Hydrophilic dispersion polymers for the clarification of deinking process waters | Karen R. Tubergen | 1998-05-12 |