Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6852297 | Method of treating residual acid | Roger Barstrom, Hannu Luhtala | 2005-02-08 |
| 6652756 | Method of purifying sewage | — | 2003-11-25 |
| 6436181 | Sizing composition and a method of sizing | Josep Lluis Bisbal Tudela | 2002-08-20 |
| 4887383 | Process for producing a slurry of a pulverized carbonaceous material | Mait M. Mathiesen, Karl M. E. Hellsten, Gunvor Karlsson | 1989-12-19 |
| 4565549 | Aqueous slurry of a solid fuel and a process for the production thereof | Mait M. Mathiesen, Karl M. E. Hellsten, Gunvor Karlsson | 1986-01-21 |
| 4549881 | Aqueous slurry of a solid fuel and a process and means for the production thereof | Mait M. Mathiesen, Karl M. E. Hellsten, Gunvor Karlsson | 1985-10-29 |
| 4496367 | Pumpable aqueous slurry of a solid fuel and a process for the production thereof | Mait M. Mathiesen, Karl M. E. Hellsten, Gunvor Karlsson | 1985-01-29 |