Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813988 | Suitable distillation column packing for the cryogenic separation of air | Douglas L. Bennett, Keith A. Ludwig, John S. Zabrenski | 1989-03-21 |
| 4239589 | Process for oxidation of black liquor | Edward F. Elton, Joseph G. Santangelo | 1980-12-16 |