Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859209 | Stable brown-coal/oil suspensions and a process for preparing same | Istvan Kalocsai, Istyan Gyoni, Karoly Remenyi, Gyorgy Plaveczky, Laszlo Kovacs +7 more | 1989-08-22 |