Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935261 | Process for treating waste drilling mud | Richard T. Davis, Charles R. Richesin | 2011-05-03 |
| 7867399 | Method for treating waste drilling mud | Charles R. Richesin, Richard T. Davis | 2011-01-11 |