Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10640711 | Multistage thermolysis method for safe and efficient conversion of treated wood waste sources | Ullrich H. Engel, Charles T. Ludwig, Ernest J. Zavoral, Sr. | 2020-05-05 |
| 10538707 | Multistage thermolysis method for safe and efficient conversion of carpet/rug, polymeric materials and other waste sources | Ullrich H. Engel, Charles T. Ludwig, Ernest J. Zavoral, Sr. | 2020-01-21 |