Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5885412 | Inhibition of hydrogen peroxide decomposing enzymes during bleaching of cellulose fibers | Kjell Abrahamsson, Peter Wållberg | 1999-03-23 |
| 5736622 | Collector intended to be used in deinking of waste paper according to the flotation process | Peter Wållberg | 1998-04-07 |