Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638609 | Process and apparatus for drying and heating | Ravi Chandran | 1997-06-17 |
| 5637192 | Endothermic spent liquor recovery process | Kanda-Swamy Durai-Swamy, David W. Warren | 1997-06-10 |