Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867756 | Removal of sulfur compounds in fluidized bed carbonaceous solids gasification | — | 1989-09-19 |
| 4854249 | Two stage combustion | Mark J. Khinkis, William A. Sandstrom | 1989-08-08 |