Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8172985 | Extraction bedplate with laser or water jet cut apertures | Christopher L. Demler | 2012-05-08 |
| 7628890 | Extraction bedplate with laser or water jet cut apertures | Christopher L. Demler | 2009-12-08 |
| 6193073 | Paper stock screening apparatus and method | Peter Seifert, Christopher M. Vitori | 2001-02-27 |
| 5591336 | Apparatus for dewatering and or washing papermaking stock | Peter Seifert, Terry L. Bliss | 1997-01-07 |
| 5582686 | High pressure water jet comminuting | Peter Seifert, Christopher M. Vitori | 1996-12-10 |
| 5382327 | Apparatus for thickening pulp and paper stock | Peter Seifert | 1995-01-17 |
| 5367894 | Apparatus and method for washing cellulosic pulp | Clinton R. Parks, Michael A. Sieron, Peter Seifert | 1994-11-29 |
| 5262003 | Method and system for defibering paper making materials | Peter Seifert | 1993-11-16 |
| 5234172 | High pressure water jet comminuting | Peter Seifert, Christopher M. Vitori | 1993-08-10 |
| 5186791 | Apparatus for thickening pulp and paper stock | Peter Seifert | 1993-02-16 |
| 5078275 | Screening apparatus for paper making stock | Terry L. Bliss, Derald R. Hatton, Peter Seifert, Jimmy L. Winkler | 1992-01-07 |
| 5064537 | Seamless screen cylinder with laser cut openings | Joseph P. Constiner, Christopher M. Vitori | 1991-11-12 |
| 5021159 | Apparatus for thickening pulp and paper stock | Terry L. Bliss, Christopher McCarthy, Larry J. Walters | 1991-06-04 |
| 4919797 | Screening apparatus for paper making stock | Irenee J. Phillippe | 1990-04-24 |
| 4901417 | Method of finishing screen plates | Carl C. Landegger | 1990-02-20 |
| 4885090 | Screen plates | Carl C. Landegger | 1989-12-05 |
| 4795560 | Screen plates | Carl C. Landegger | 1989-01-03 |
| 4725007 | Apparatus for pulping high consistency paper making stock | — | 1988-02-16 |
| 4663030 | Disk rotor for selectifier screen | Mark W. Gilkey, Jimmy L. Winkler, Larry D. Markham | 1987-05-05 |
| 4622132 | Liquid cyclone or centrifugal cleaner | — | 1986-11-11 |
| 4451358 | Noncircular rejects outlet for cyclone separator | — | 1984-05-29 |
| 4410424 | Screening apparatus for paper making stock | Peter Seifert | 1983-10-18 |
| 4383918 | High turbulence screen | Peter Seifert | 1983-05-17 |
| 4356084 | Self-sealing valve assembly to facilitate unplugging of a centrifugal cleaner | Derald R. Hatton | 1982-10-26 |
| 4328096 | Dual flow screening apparatus | Peter Seifert | 1982-05-04 |