Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5741954 | Process of selective desulfonation | Markku Niemi, Pekka Somersalo, Jouko Kujala | 1998-04-21 |
| 5684183 | Method for preparing 4-alkyl-2-hydroxy-3,5-dichlorobenzene sulphonic acids | Ari Lokio, Markku Niemi | 1997-11-04 |
| 5114701 | Method for producing hydrogen peroxide and solvent system for use in the hydrogen peroxide production process | Reijo Aksela | 1992-05-19 |
| RE32875 | Process for the froth-flotation of a phosphate mineral from a phosphate-carbonate ore | Esko T. Kari, Jarmo Aaltonen | 1989-02-21 |
| 4732708 | Method for converting vegetable material into chemicals | Rainer Ekman, Christer Eckerman, Tapio Mattila | 1988-03-22 |
| 4687571 | Process for the froth-flotation of a phosphate mineral from a phosphate-carbonate ore | Esko T. Kari, Jarmo Aaltonen | 1987-08-18 |