Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679238 | Method for producing sulfuric acid from flue gas desulfurization | Norman Zethward Shilling | 1997-10-21 |
| 5622641 | Method for in-situ reduction of PCB-like contaminants from concrete | Andrew Philip Shapiro, Henry S. Spacil | 1997-04-22 |