Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413914 | Recovery of heavy hydrocarbons from oil sludge | Ian Ripley | 1983-11-08 |
| 4364776 | Recovery of heavy hydrocarbons from oil sludge | Ian Ripley | 1982-12-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413914 | Recovery of heavy hydrocarbons from oil sludge | Ian Ripley | 1983-11-08 |
| 4364776 | Recovery of heavy hydrocarbons from oil sludge | Ian Ripley | 1982-12-21 |