Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4702891 | Fluid flow distribution system for fluidized bed reactor | Allen Li | 1987-10-27 | $2,368,000 |
| 4673552 | Downwardly directed fluid flow distribution system for ebullated bed reactor | Allen Li, Lloyd M. Ruef | 1987-06-16 | |
| 4521295 | Sustained high hydroconversion of petroleum residua feedstocks | Michael C. Chervenak, Govanon Nongbri | 1985-06-04 | $1,026,000 |
| 4452911 | Frangible catalyst pretreatment method for use in hydrocarbon hydrodemetallization process | Allen Li, Shyy-Jong D. Lin, Virginia A. Malik, Michael C. Chervenak | 1984-06-05 | $961,000 |