Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844155 | Process for increasing the yield of oil reservoirs | Mihaly Megyeri, Istvan Koncz, Tibor Paal, Antal Szittar | 1989-07-04 |
| 4799551 | Enhanced oil recovery | Sandorne Bauer, Zoltan Biro, Sandor Doleschall, Eva Farkas, Gyula Milley +4 more | 1989-01-24 |