Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5081039 | Process for making catalyst inventory measurements and control procedure for adding or withdrawing catalyst | Robert D. Buttke | 1992-01-14 | $8,352,000 |
| 4808289 | Resid hydrotreating with high temperature flash drum recycle oil | Nicholas C. Vasti, Norman R. Woods, Robert E. Boening | 1989-02-28 | $6,007,000 |
| 4753721 | Process for resid hydrotreating employing feed distributor | Paul E. Stelly, Robert E. Boening, William E. McWhirter, Jr., Duncan E. Atkinson, Richard D. Petersen | 1988-06-28 | $7,803,000 |
| 4743356 | Increasing resid hydrotreating conversion | David J. Soderberg, Norman R. Woods | 1988-05-10 | $18,424,000 |