Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226632 | Process for producing high-purity alumina and hydraulic cement | Laszlo Kapolyi, Geza Szentgyorgyi, Gyorgy Vamos, Jerzy Grzymek, Anna D. Grzymek +1 more | 1980-10-07 |