Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139617 | Process for the production of a hemicellulose hydrolysate and special high alpha cellulose pulp | Panu Tikka | 1992-08-18 |
| 4971658 | Method of intensifying the washing of a fiber suspension | Kaj Henricson, Olavi Pikka, Aki Vilpponen | 1990-11-20 |
| 4929307 | Method of decreasing black liquor viscosity | Erkki Kiiskila | 1990-05-29 |
| 4895618 | Method of controlling alkaline pulping process | Panu Tikka | 1990-01-23 |
| 4889593 | Method of determining rapidly the concentration of the total sulphur dioxide and the lignosulphonate present in sulphite pulping process liquors | Panu Tikka | 1989-12-26 |
| 4842689 | Method for controlling sulphite pulping and hydrolytic processes by means of rapid furfural analyzer | Panu O. Jikka | 1989-06-27 |
| 4718979 | Method for rapid determination of the contents of lignin, monosaccharides and organic acids in the process solutions of sulfite pulping | Panu Tikka | 1988-01-12 |
| 4384921 | Alkaline sulfite pulping process with sodium aluminate and anthraquinone | Soile H. Pihlajamaki | 1983-05-24 |