Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883499 | Process adapted to produce synthesis gas and activated carbon from organic input material | Mounir Mazzawi | 1989-11-28 |
| 4846668 | Heating stove which includes a pyrolysis gasifier | Birdell T. Boyer, Richard A. Suisse | 1989-07-11 |
| 4799437 | Heating stove which includes a pyrolysis gasifier | Birdell T. Boyer, Richard A. Suisse | 1989-01-24 |