Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299853 | Paper or paperboard product comprising at least one ply containing high yield pulp and its production method | Gunilla Pettersson, Sven Norgren, Per Engstrand | 2022-04-12 |
| 10145068 | Process for producing at least one ply of a paper or board and a paper or board produced according to the process | Hallgren Hans, Frank Peng, Anders Moberg, Gunilla Pettersson, Sven Norgren | 2018-12-04 |
| 5879510 | Light drainability, bulky chemimechanical pulp that has a low shive content and a low fine-material content | Tjell-Ake Hagglund, Ingela Ekebro, Roland Back | 1999-03-09 |
| 5853534 | Method of producing pulp with high yield using a two-stage refining system operating at different temperatures | Roland Back, Ove Danielsson | 1998-12-29 |
| 5262005 | Easily defibered web-shaped paper product | Lennart Eriksson, Milan Kolar, Tjell-Ake Hagglund | 1993-11-16 |
| 4635864 | Refiner disc segment | Per V. Peterson, Alf O. K. Johansson | 1987-01-13 |
| 4597872 | Method for anaerobic wastewater treatment | Per Andersson, Goran E. Annergren, Per V. Peterson | 1986-07-01 |
| 4357208 | Method of making pulp | Per V. Peterson | 1982-11-02 |
| 4356213 | Chip treatment | Per V. Peterson | 1982-10-26 |
| 4280868 | Method for refining lignocellulose-containing material | Per V. Peterson | 1981-07-28 |