Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881946 | Process for the beneficiation of coal by selective caking | Antonio Vettor, Nello Passarini | 1989-11-21 |
| 4798915 | Process for the extraction of paraffins from mixtures thereof with alkane-sulfonic acids | Lucio Faggian, Edoardo Platone, Emilio Picchi | 1989-01-17 |