Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7011756 | In situ immobilization of metals within density variant bodies of water | — | 2006-03-14 |
| 6435769 | Gas-phase modification in earth materials | — | 2002-08-20 |
| 6350380 | In situ immobilization within density variant bodies of water | — | 2002-02-26 |
| 6196765 | Inhibiting acid mine drainage by displacing oxygen in rock heap | — | 2001-03-06 |
| 5710361 | In-situ treatment of waste stacks, soils or earth materials to immobilize metals contained therein | Roger B. Humberger, Michael Orr, Charles H. Schwartz | 1998-01-20 |
| 5632715 | In situ immobilization of metals in waste stacks and waste stack affected zones | Roger B. Humberger, Michael Orr, Charles H. Schwartz | 1997-05-27 |