Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8245653 | Split shell circular furnace and binding systems for circular furnaces | Felim McCaffrey, Nils W. Voermann, Clarence A. Nichols, Robert Veenstra, Jimmy Sarvinis +1 more | 2012-08-21 |
| 6724802 | Cooling and support systems for furnace roofs | Kenneth M. Donaldson, Bert O. Wasmund, Ken T. Hutchinson, Nils W. Voermann | 2004-04-20 |