Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7534322 | Method of deinking recycled paper employing centrifigal cleaners | — | 2009-05-19 |
| 5865947 | Method for recycling mixed wastepaper including plastic-containing paper and ink printed paper | Narendra R. Srivatsa | 1999-02-02 |
| 5766448 | Pressure screening system for processing contaminated pulp fiber | — | 1998-06-16 |
| 5733412 | Decolorizing brown fibers in recycled pulp | Linda A. Beltz | 1998-03-31 |
| 5707488 | Screen/vortex apparatus for cleaning recycled pulp related process | — | 1998-01-13 |
| 5580446 | Screen, vortex apparatus for cleaning recycled pulp and related process | — | 1996-12-03 |
| 5512133 | Method for deinking recycled paper using a low flow elongated open top flotation vessel | — | 1996-04-30 |
| 5453159 | Deinking of recycled pulp | — | 1995-09-26 |
| 5340439 | Method for removing ink from printed paper using agglomerating agent, followed by addition of talc | Narendta R. Srivatsa | 1994-08-23 |
| 5234543 | Deinking method using ink agglomeration | Narendra R. Srivatsa | 1993-08-10 |
| 4722793 | Apparatus and method for thickening pulp and paper stock | Peter Seifert, Michael F. Kinne | 1988-02-02 |
| 4663030 | Disk rotor for selectifier screen | David E. Chupka, Mark W. Gilkey, Jimmy L. Winkler | 1987-05-05 |
| 4435249 | Process for the oxygen delignification of pulp mill rejects | Andrew Martin, Edward F. Elton, Vincent L. Magnotta, Scott A. Wallick | 1984-03-06 |
| 4431480 | Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction | Vincent L. Magnotta | 1984-02-14 |
| 4399028 | Froth flotation apparatus and method | Gregory D. Kile, Ronald D. Cruea, Derald R. Hatton | 1983-08-16 |
| 4384920 | Method and apparatus for oxygen delignification | Edward F. Elton, Vincent L. Magnotta | 1983-05-24 |
| 4363697 | Method for medium consistency oxygen delignification of pulp | Henrik Eklund | 1982-12-14 |