Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874584 | Fluidized bed reactor | — | 1989-10-17 |
| 4867948 | Fluidized bed reactor | — | 1989-09-19 |
| 4824360 | Method for decreasing emissions of nitrogen oxides and sulfur oxides when burning fuels which contain nitrogen and sulfur | Pentti Janka | 1989-04-25 |