Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5601703 | Flotation machine and process for removing impurities from coals | Kazimierz Szymocha, Wanda Pawlak, Conrad J. Kulik, Howard E. Lebowitz | 1997-02-11 |
| 5474582 | Coal-water mixtures from low rank coal and process of preparation thereof | Wanda Pawlak, Kazimierz Szymocha, Yevgenia Briker, Loredana CALDIERO, Antonio Vettor | 1995-12-12 |
| 5472094 | Flotation machine and process for removing impurities from coals | Kazimierz Szymocha, Wanda Pawlak, Conrad J. Kulik, Howard E. Lebowitz | 1995-12-05 |
| 5338322 | Process for converting heavy oil deposited on coal to distillable oil in a low severity process | Teresa Ignasiak, Otto P. Strausz, Jerzy S. Janiak, Wanda Pawlak, Kazimierz Szymocha +1 more | 1994-08-16 |
| 5019245 | Method for recovery of hydrocarbons form contaminated soil or refuse materials | Teresa Ignasiak, Ali A. Turak, Wanda Pawlak, Carlos R. Guerra, Melvin L. Zwillenberg | 1991-05-28 |
| 4966608 | Process for removing pyritic sulfur from bituminous coals | Wanda Pawlak, Jerzy S. Janiak, Ali A. Turak | 1990-10-30 |
| 4854940 | Method for providing improved solid fuels from agglomerated subbituminous coal | Jerzy S. Janiak, Ali A. Turak, Wanda Pawlak | 1989-08-08 |
| 4726810 | Process for the selective agglomeration of sub-bituminous coal fines | — | 1988-02-23 |
| 4259083 | Production of metallurgical coke from oxidized caking coal | — | 1981-03-31 |