Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007985 | Method of reducing the energy consumption at the refining of cellulose containing material | Per Engstrand, Lars Hammar, Rune L. Pettersson | 1991-04-16 |
| 4680873 | Method for controlling shrinkage and/or stretching of a paper web in the drying section of paper machine, in the form of a cylinder drier and/or fan dryer, transversely to the feed direction of the web and arrangements for carrying out the method | Christer Fellers, Torbjorn Hansson | 1987-07-21 |