Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889538 | Coal agglomeration beneficiation with heavy hydrocarbon oils and utilization thereof in coal/heavy oil coprocessing | Josef A. Mikhlin, deceased, Michio Ikura, James Kelly | 1989-12-26 |
| 4874393 | Method of producing fuel of relatively higher calorific value from low rank and oxidized coal | Josef A. Mikhlin, deceased, Haresh S. Divanji, Richard D. Coleman | 1989-10-17 |