Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300586 | pH stable activated carbon | Robert G. Roodman, J. Michael Havelka, Robert A. Scherrer | 2007-11-27 |
| 6946077 | pH stable activated carbon | Robert G. Roodman, J. Michael Havelka, Robert A. Scherrer | 2005-09-20 |