Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5599440 | Catalyst method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed | Bruce E. Stangeland, David S. Smith, James T. McCall, Georgieanna L. Scheuerman, Robert W. Bachtel +1 more | 1997-02-04 |
| 5593573 | Demetalation of hydrocarbonaceous feedstocks using sulfuric acid and salts thereof | — | 1997-01-14 |