Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986696 | Method of dewatering a subterranean space, especially a mine | Ferenc Pera, Gyorgy Szentai, Zsolt Kesseru, Peter Toth | 1991-01-22 |
| 4436550 | Process for recovery of aluminum from carbonaceous waste products | — | 1984-03-13 |
| 4226632 | Process for producing high-purity alumina and hydraulic cement | Geza Szentgyorgyi, Gyorgy Vamos, Jerzy Grzymek, Anna D. Grzymek, Stanislaw Bethke +1 more | 1980-10-07 |