Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814949 | Process for production of phosphoric acid by crystallization of phosphoric acid hemihydrate | Sakari Riihimäki, Paula Ylinen, Anders Weckman | 2004-11-09 |
| RE32875 | Process for the froth-flotation of a phosphate mineral from a phosphate-carbonate ore | Esko T. Kari, Elias Suokas | 1989-02-21 |
| 4755285 | Process for the froth-flotation of a phosphate mineral, and a reagent intended for use in the process | Anders Weckman, Esko T. Kari | 1988-07-05 |
| 4687571 | Process for the froth-flotation of a phosphate mineral from a phosphate-carbonate ore | Esko T. Kari, Elias Suokas | 1987-08-18 |