Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041237 | Aqueous solution containing sulphur dioxide and sodium in high percentages, its manufacture and use | — | 1991-08-20 |
| 4917763 | Method of recovering chemical from spent pulp liquors | Sven Santen, Jarl Martensson | 1990-04-17 |
| 4710269 | Recovering chemicals from spent pulp liquors | Sven Santen, Sven Eriksson | 1987-12-01 |
| 4692209 | Recovery of chemicals from pulp waste liquor | Sven Santen, Sven-Erik Malmeblad | 1987-09-08 |
| 4680136 | Method for preparing compositions which can be used in the production of sodium dithionite; and the use of such compositions | — | 1987-07-14 |
| 4601786 | Recovery of chemicals from pulp waste liquor with plasma generator heating | Sven Santen, Sven-Erik Malmeblad | 1986-07-22 |