Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8858704 | Low density cementitious compositions using limestone | Wes Woytowich, Bill Carruthers, Paul Lehoux | 2014-10-14 |
| 8435930 | Low density cementitious compositions using lime kiln dust | Wes Woytowich, Bill Carruthers, Paul Lehoux | 2013-05-07 |