Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6860680 | Waste containment and processing facilities formed contemporaneously with the disposal of mineral refuse, and related methods | Mark Topp, Tracy Johnson | 2005-03-01 |
| 6846131 | Methods and facilities for producing revenue from gypsum-based refuse sites | Mark Topp, Tracy Johnson | 2005-01-25 |