Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5766338 | Road base material containing fly ash | — | 1998-06-16 |
| 5484479 | Method of manufacturing synthetic aggregate | — | 1996-01-16 |
| 5143481 | Method of treating municipal sewage sludge and product produced thereby | Glenn Schumacher, Mitchell Nowicki, Alan Dunbar, Jeffrey M. Douglas | 1992-09-01 |
| 5051031 | Method of treating municipal sewage sludge and product produced thereby | Glenn Schumacher, Mitchell Nowicki, Alan Dunbar, Jeffrey M. Douglas | 1991-09-24 |