Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884635 | Enhanced oil recovery with a mixture of water and aromatic hydrocarbons | Alexander S. McKay, Philip Harris | 1989-12-05 |
| 4640359 | Bitumen production through a horizontal well | Petre Toma | 1987-02-03 |
| 4532994 | Well with sand control and stimulant deflector | Petre Toma, David A. Redford, Roy Coates | 1985-08-06 |
| 4434054 | Filter for separating discrete solid elements from a fluid stream | Petre Toma | 1984-02-28 |