Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886118 | Conductively heating a subterranean oil shale to create permeability and subsequently produce oil | Eric Pierre de Rouffignac, Harold J. Vinegar, Michael F. Lucid | 1989-12-12 |
| 4704514 | Heating rate variant elongated electrical resistance heater | Cor F. Van Egmond | 1987-11-03 |
| 4667739 | Thermal drainage process for recovering hot water-swollen oil from a thick tar sand | Carlos A. Glandt | 1987-05-26 |
| 4616705 | Mini-well temperature profiling process | George Leo Stegemeier, Cor F. Van Egmond | 1986-10-14 |
| 4572299 | Heater cable installation | Cor F. Vanegmond | 1986-02-25 |
| 4570715 | Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature | Cor F. Van Egmond | 1986-02-18 |