Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990632 | Process for the production of oxides | Ramakrishnan Ramachandran, Donald L. MacLean | 1991-02-05 |
| 4943650 | Process for the production of nitriles | Ramakrishnan Ramachandran, Mark J. Andrecovich, Donald L. MacLean | 1990-07-24 |
| 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 |
| 4767521 | Treatment of feed for high severity visbreaking | Robert J. Feldman, James M. Chen, Andrei Rhoe, Roger P. Van Driesen, C. Bertil Fogman | 1988-08-30 |
| 4594132 | Chloride hydrometallurgical process for production of copper | John Gerlach | 1986-06-10 |
| 4408985 | Method of fixing hazardous substances in waste foundry sand | Mark A. Anderson, Robert W. Balliett, Paul E. Link | 1983-10-11 |
| 4379711 | Apparatus and method for visually monitoring an ion exchange fluidized bed | — | 1983-04-12 |
| 4298466 | Apparatus and method for visually monitoring an ion exchange fluidized bed | — | 1981-11-03 |