Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649031 | Process for recovering rare metals from the combustion residue of coal by digestion | Bela Matyas, Andras Solymos, Ferenc Kaszanitzky, Gyorgy Panto, Janos Leffler | 1987-03-10 |