Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6258255 | Method for enhancing asphalt properties | Mary Josephine Gale, Lyle E. Moran, Biddanda U. Achia | 2001-07-10 | $293,180,000 |
| 5059299 | Method for isomerizing wax to lube base oils | Ian A. Cody, Theodore H. West, William A. Wachter, Biddanda U. Achia | 1991-10-22 | $96,325,000 |
| 4909927 | Extraction of hydrocarbon oils using a combination polar extraction solvent-aliphatic-aromatic or polar extraction solvent-polar substituted naphthenes extraction solvent mixture | — | 1990-03-20 | $70,870,000 |