Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990241 | Hydrotreating process to minimize catalyst slumping | Robert D. Buttke, Frank W. Pickell | 1991-02-05 |
| 4808289 | Resid hydrotreating with high temperature flash drum recycle oil | Norman K. McDaniel, Nicholas C. Vasti, Norman R. Woods | 1989-02-28 |
| 4753721 | Process for resid hydrotreating employing feed distributor | Norman K. McDaniel, Paul E. Stelly, William E. McWhirter, Jr., Duncan E. Atkinson, Richard D. Petersen | 1988-06-28 |