Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833124 | Recovery process for wastes containing hexavalent chromium | Andrew Wells Phelps, Joseph Thomas Swartzbaugh | 2004-12-21 |
| 6818313 | Corrosion-inhibiting coating | Andrew Wells Phelps | 2004-11-16 |