Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689155 | Method for purifying solids-stabilized emulsions | — | 1987-08-25 |
| 4385121 | Medium and process for disposing of hydrocarbon wastes | — | 1983-05-24 |
| 4308076 | Method for cleaning heat exchangers in situ | — | 1981-12-29 |
| 4206001 | Cleaning method for refining process rundown tank | Raymond A. Petrick | 1980-06-03 |