Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5821428 | Sealed observation element for sulfur recovery unit | James E. Lewis, Craig S. Ward, Jr. | 1998-10-13 |
| 5740197 | Cooled probe for use in high temperature process vessels | Lory L. Johnson, Orville C. Ungerer, F. Ellis Vandiver | 1998-04-14 |
| 5266274 | Oxygen control system for a sulfur recovery unit | James E. Lewis | 1993-11-30 |
| 4919912 | Process for the treatment of sulfur containing gases | Lawrence T. Denk, J. Michael Lawrence | 1990-04-24 |