Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4278128 | Petroleum recovery chemical retention prediction technique | Richard H. Widmyer, Yick-Mow Shum, Curtis E. Howard | 1981-07-14 |
| 4273187 | Petroleum recovery chemical retention prediction technique | Richard H. Widmyer, Yick-Mow Shum, Curtis E. Howard | 1981-06-16 |
| 4250961 | Oil recovery method utilizing a surfactant slug driven by water of a controlled salinity | Everett W. Morse | 1981-02-17 |