Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025859 | Overlapping horizontal fracture formation and flooding process | Merle E. Hanson | 1991-06-25 |
| 4889186 | Overlapping horizontal fracture formation and flooding process | Merle E. Hanson | 1989-12-26 |