Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6156281 | Process for removal of hazardous air pollutants from coal | David J. Akers, Kenneth N. Ekechukwu, Mobolaji E. Aluko | 2000-12-05 |
| 5601703 | Flotation machine and process for removing impurities from coals | Kazimierz Szymocha, Boleslaw Ignasiak, Wanda Pawlak, Conrad J. Kulik | 1997-02-11 |
| 5472094 | Flotation machine and process for removing impurities from coals | Kazimierz Szymocha, Boleslaw Ignasiak, Wanda Pawlak, Conrad J. Kulik | 1995-12-05 |
| 5461186 | Process for treating contaminated soil | Conrad J. Kulik | 1995-10-24 |
| 4396488 | Process for coal liquefaction employing a superior coal liquefaction process solvent | Norman C. Stewart, William H. Weber | 1983-08-02 |
| 4372838 | Coal liquefaction process | Conrad J. Kulik | 1983-02-08 |
| 4191700 | Synthetic liquid fuels | Ronald H. Wolk, Seymour B. Alpert, Norman C. Stewart, William C. Rovesti | 1980-03-04 |