Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8075866 | Sulfur degassing process | Alfred E. Keller, Nathan A. Hatcher, Sriram Ramani, Michael D. Smith | 2011-12-13 |
| 7998451 | Sulfur degassing process | Alfred E. Keller, Nathan A. Hatcher, Sriram Ramani, Michael D. Smith | 2011-08-16 |
| 7560088 | Compact sulfur recovery plant and process | Alfred E. Keller, Sriram Ramani, Nathan A. Hatcher, Joe D. Allison, Steven E. Lusk +4 more | 2009-07-14 |
| 7226572 | Compact sulfur recovery plant and process | Alfred E. Keller, Sriram Ramani, Joe D. Allison, Steven E. Lusk, Nathan A. Hatcher +4 more | 2007-06-05 |
| 6946111 | Short contact time catalytic partial oxidation process for recovering sulfur from an H2S containing gas stream | Alfred E. Keller, Joe D. Allison, Sriram Ramani | 2005-09-20 |
| 6800269 | Short contact time catalytic sulfur recovery system for removing H2S from a waste gas stream | Alfred E. Keller, Sriram Ramani, Joe D. Allison | 2004-10-05 |