Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7513451 | Refining element | Pertti Purolainen, Lars Holmsten | 2009-04-07 |
| 7451946 | Refining element | — | 2008-11-18 |
| 7445174 | Refining element | — | 2008-11-04 |
| 7419112 | Refining surface and a blade segment for a refiner | Håkan Sjöström, Vesa Arjanmaa, Per Froberg, Petteri Vuorio, Juha-Pekka Huhtanen +1 more | 2008-09-02 |
| 7354011 | Refining element | — | 2008-04-08 |
| 7198216 | Refining element | — | 2007-04-03 |
| 7007879 | Pair of opposed co-operating refining elements | — | 2006-03-07 |
| 6957785 | Refining segment for a rotatable refining disc, and a refining apparatus comprising a refining disc with such refining segment | — | 2005-10-25 |
| 6932290 | Refining segment and a refining apparatus comprising a refining disc with such refining segment | — | 2005-08-23 |
| 6602310 | Separator device with rotor having peripheral carriers for separating solid particles from a gas stream | — | 2003-08-05 |
| 6592062 | Refining element | — | 2003-07-15 |
| 6499682 | Refining elements | — | 2002-12-31 |
| 6299084 | Feeding device for fibrous material | — | 2001-10-09 |
| 6227471 | Feeding element for fibrous material | — | 2001-05-08 |
| 6042036 | Refining element | Peter Austin Bergquist, Anders Hawen | 2000-03-28 |
| 5683048 | Refining elements | — | 1997-11-04 |
| 5526992 | Refining element of a disc refiner | Anders Hawen, Christer Hedlund, Christer Nastren, Pertti Purolainen, Lennart Rohden | 1996-06-18 |
| 5439183 | Refiner segment | — | 1995-08-08 |
| 5362003 | Refining segment | — | 1994-11-08 |
| 5112443 | Method and apparatus for the manufacture of fibre pulp | Anders E. E. Haven | 1992-05-12 |
| 4953796 | Refiner segment | — | 1990-09-04 |
| 4772358 | Method for making pulp | — | 1988-09-20 |