Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870201 | Process for the production of nitriles | Ramakrishnan Ramachandran, Virginia A. Malik, Donald L. MacLean | 1989-09-26 |
| 4849537 | Process for the production of nitriles | Ramakrishnan Ramachandran, Donald L. MacLean | 1989-07-18 |
| 4849538 | Process for the production of nitriles | Ramakrishnan Ramachandran, Donald L. MacLean | 1989-07-18 |
| 4795551 | Solvent refining of residues | Gary L. Hamilton, Andrei Rhoe | 1989-01-03 |