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, Keith E. Joiner +1 more | 2012-08-21 |
| 7134397 | System for applying vertical compressive force to furnace walls | Kenneth T. Hutchinson, Kenneth M. Donaldson, Keith E. Joiner, Clarence A. Nichols | 2006-11-14 |