| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 6 | |
| #2 | Canada | 4 | |
| #3 | Finland | 3 | |
| #4 | United States | 3 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | Brazil | 1 | |
| #7 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Environmental technology | |
| #3 | Materials and metallurgy | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Andersson Alf Ove | 13 |
| #2 | Andersson Alf O | 7 |
| #3 | Warnqvist Bjoern S | 2 |
| #4 | Warnqvist Bjoern Sigurd | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4872950A | Process for recovering energy and chemicals from spent liquor in pulp preparation | |
| SE8700768D0 | Equipment for slaking lime | |
| EP0207908A1 | Process for increasing the solids content of black liquour at its recovery in a sulfate pulping process | |
| US4595456A | Pulp washing process | |
| CA1163777A | Preparation of white liquor |