Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5239936 | Low-temperature ashing of hazardous plastic waste | Robert P. Wichner, Roger D. Spence, Helen W. Jermyn | 1993-08-31 |
| 5167711 | Low-temperature ashing of hazardous plastic waste | Robert P. Wichner, Roger D. Spence, Helen W. Jermyn | 1992-12-01 |