Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5620590 | Hydrocracking process using small crystal size zeolite Y | Robert P. L. Absil, Daria N. Lissy, Robert A. Ware, Stephen S. Wong | 1997-04-15 | $89,595,000 |
| 5401704 | Hydrocracking catalyst and process using small crystal size zeolite Y | Robert P. L. Absil, Daria N. Lissy, Robert A. Ware, Stephen S. Wong | 1995-03-28 | $18,112,000 |
| 4923591 | Continuous lubricating oil dewaxing process | Kenneth R. Graziani, Chwan P. Kyan | 1990-05-08 | $22,310,000 |
| 4911821 | Lubricant production process employing sequential dewaxing and solvent extraction | Quang N. Le, Stephen S. Wong | 1990-03-27 | $9,353,000 |
| 4720337 | Hydrodewaxing method with interstage separation of light products | Kenneth R. Graziani, Chwan P. Kyan | 1988-01-19 | $11,864,000 |
| 4260518 | Process for the regeneration of metallic catalysts | Hassan Windawi | 1981-04-07 |