Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4708974 | Enhanced hydrocarbon recovery by permeability modification with phenolic gels | Ping CHANG, Gordon D. Gruetzmacher, Clifford N. Meltz | 1987-11-24 | $13,793,000 |