Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11365515 | Foam assisted application of strength additives to paper products | Mingxiang Luo, John C. Gast, Zachary Hier, Matthew Nicholas | 2022-06-21 |
| 9568375 | Method and apparatus for estimating fouling factor and/or inverse soluble scale thickness in heat transfer equipment | Timothy Patterson | 2017-02-14 |
| 5591336 | Apparatus for dewatering and or washing papermaking stock | Peter Seifert, David E. Chupka | 1997-01-07 |
| 5384014 | Apparatus and method for thickening pulp and paper stock | — | 1995-01-24 |
| 5078275 | Screening apparatus for paper making stock | David E. Chupka, Derald R. Hatton, Peter Seifert, Jimmy L. Winkler | 1992-01-07 |
| 5021159 | Apparatus for thickening pulp and paper stock | David E. Chupka, Christopher McCarthy, Larry J. Walters | 1991-06-04 |
| 4564443 | Reverse centrifugal cleaning of paper making stock | — | 1986-01-14 |