Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5269925 | Filter comprising multiple layers of non-woven filter fabric of decreasing porosity | — | 1993-12-14 | $61,357,000 |
| 4898659 | Multi-point cold solvent injection in scraped surface dewaxing chillers | — | 1990-02-06 | $222,188,000 |
| 4728413 | Agitated dewaxing employing modified agitator means | — | 1988-03-01 | $67,220,000 |
| 4502787 | Agitated heat exchanger to chill solvent-oil and wax slurry to wax filtration temperature | — | 1985-03-05 | $23,062,000 |
| 4441987 | Dewaxing process using agitated heat exchanger to chill solvent-oil and wax slurry to wax filtration temperature | — | 1984-04-10 | $13,845,000 |
| 4334978 | Dewaxing and wax filterability by reducing scraper speed in scraped surface chilling units | — | 1982-06-15 | $20,051,000 |
| 4206034 | Wax separation process | — | 1980-06-03 | $15,792,000 |