Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6662872 | Combined steam and vapor extraction process (SAVEX) for in situ bitumen and heavy oil production | A. M. Harold Gutek, Ronald D. Myers, Tadahiro Okazawa | 2003-12-16 | $185,219,000 |