Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108968 | Process for treating a material wherein the material is suspended in a gaseous atmosphere | James W. Barnes | 1992-04-28 |
| 5082552 | Hydrotreating with catalyst particles using length and density grading | J. Gary Welch | 1992-01-21 |
| 4720473 | Production of improved catalyst-type particles using length and density grading | J. Gary Welch | 1988-01-19 |